Again, I know of nobody who thinks this.
If anything it's the opposite: the more people understand about modern science, the more we realize we don't know.
The purpose of science is to progress towards a more accurate understanding of our reality. Sometimes that does involve radical new ideas which overturn previously held ideas. The history of scientific advancement will attest to that.
That doesn't mean we think we've already figured out everything, so I have no idea where you are getting that idea from.
I get this idea because I come from a place you are unfamiliar with.
I can only explain it in metaphor: take for instance, if someone travels to America in the early 1950s, in the deep south. Literally using a recent Dr Who plot here. The people there believe they are reasonable, kind, good, open minded people. Yet, they treat people who simply have a different color of skin as inferiors. They do not mind unfairly jailing them, or slapping them in public. Something they would never do to their own kind.
They are not aware of how this will be viewed, even just seventy years in the future.
Another metaphor: two people are traveling in the desert. One of them is from a very foreign land. The other is a local tribesman, very familiar with the desert. He is trying to help this stranded stranger.
The stranded stranger tells the tribesman to stop. Says they have to wait where they are.
The tribesman thinks this is crazy. Foolish. He does not understand.
He wondered why this stranger was talking to himself. He is delirious, the tribesman thinks.
How might the foreigner not be foolish in this circumstance?
He is a downed pilot. He has not been talking to himself. He has a radio piece in his ear, and a microphone on his jacket. It is wired into a satellite communication device. He has been talking to his military base. They have his coordinates. They have told him to sit tight and wait.
Now, to make it more applicable, say that tribesman is somehow from a lost tribe, with no contact with the modern world. They have no idea what a satellite communication device is. They have never seen a plane nor copter before. They do not know what a military base even is.
It is much more difficult to describe to them.
Explanations:
You don't know what Heaven is. You probably think it is a bunch of stories people have told, to make themselves feel safe in the world. It is like Japan. If you have never been there, you don't know what it is like. It is hard to explain.
You have to be sensitive. The person is from another land. A very alien one. If you take care to listen to them, you might start to understand their culture. Their way of viewing the world.
You are used to dealing with people from places you understand. They have familiar beliefs as you do. What you just stated, probably the majority of Christians believe. You may believe you have been triggered, you understand me. You may think what I have stated has some resemblance to what you have heard before. I am a known entity. I am like those. The language sounds similar.
On the surface.
Of course, now you have talked to me a bit more, you probably see this is not the case.
You could get a clue, what Christian who expresses doubt on modern science have you come across might have put as their avatar Jim Morrison?
Are you familiar with Rick & Morty? Probably. If not, Rick is a superscientist. He takes his grandson Morty on a lot of adventures around the universe. Through most of the series, the rest of their planet has no idea, and nothing like the science they have. Why doesn't Rick share his technology with the rest of the world?
Who would keep such things secret?
Anybody who has such technology. That is who.
The track science is on, is fine. Who cares? I can explain things from an evolutionary point of view, or not. Does not matter. It is a band aid. It is primeval.
It will be replaced.
For Christians, this is explained as angels coming from the Kingdom of Heaven. For agnostics and atheists, the metaphoric framework that can be used with them is 'aliens' from 'up there', from another world. And not like even your best science fiction has yet even begun to grasp.
'We come in peace'.
LoL!
You have never seen a "miracle". Magic does not exist. There are no such things as 'beings from another world', whether they are angels, or aliens, or faeries, or whatever people have called them. Even if they were, they would probably be green headed monsters, just come here to eat people. Maybe use them as slaves, or something else -- man would think of from his paranoid imagination.
'Magic is nothing but technology sufficient enough in advancement to not be understood'. Paraphrasing Clarke's statement.
This idea that aliens would travel in spaceships is a metaphor. Communication bridges are hard to establish.
People have to think in their own terms, from things they deal with. Flying ships in modern days. Flaming chariots in old days.
Humans live, at most, 120 years. Usually around 70, depending on locale. Their sense of time is very different from people who live millions of years.
Humans are of flesh and blood. Intrinsically vulnerable in every way.
Even a young man can die just by slipping in the bathroom and breaking his head open. A needle hurts. A wrong break in the skin can severe an artery. They have to [bless and do not curse][bless and do not curse][bless and do not curse][bless and do not curse] and sleep and eat. They need clothes and shelter.
You can imagine humans not made of flesh and blood. Maybe something like rock. You can imagine humans, like us, maybe billions of years ago, having transferred their consciousness somewhere else. Into something else. Maybe they then were able to perfect these bodies. Make them into a substance that is able to be as wind. Learn how to manipulate reality as if it were a dream, or a computer simulation.
Maybe they learned how to travel across space just by doing 'something like' 'just thinking about where they want to go'. As humans might do in their dreams.
Maybe the original universe was not even this one. Maybe there was a place where 'something like' a vast array of computers were made. Maybe this would be equivalent to our year 30,000. Maybe it took them a million years. Maybe a billion.
Maybe they transferred their consciousness into these computers and created virtual worlds. Maybe they created universes. Maybe they created people, not unlike their own ancestors, who originally invented computers and robots on some of these worlds. Maybe, because of their sense of time, they were happy to hang around, all along. Hide and watch. Manage things 'from the shadows'.
Maybe there is something to the weak flesh which was important. Something called 'trust'. Something called 'love'. Something which was required for them to eventually move to better bodies. Like their own.
All of which is fine and good, but 'prove it'. Show, don't tell. Where is the evidence.
Why talk about such things, without evidence.
If you talk about your house, your job, your family, your background, maybe I might call you a liar. If it is probable, ordinary, probably not, right? If you claim to be a Navy Seal, a spy, a billionaire? That is improbable. Prove it.
That is the problem with probability, isn't it? Fifty fifty chance of a quarter landing heads, does not mean that quarter might not land tails fifty times in a row.
One in a billion chance to win a massive lottery does not mean much if you buy one ticket, first time in your life, and win it.
The reason I write this is not because 'evidence won't be forthcoming'. You can expect the world to change. Animals in the wild know when a storm is coming. Humans know that there is a possibility of some massive change happening, from someplace they do not know.
Even if there were not, you can extrapolate how modern science would appear to humans in fifty, hundred, thousand, hundred thousand years, and so on.