Hard to guess, but its not relevant. What is relevant is if it works or not. And it does, while the flat earth does not work.
Flat earth works at least as well as globe earth does.
Remember, the modern consensus ""empirical"" view of the cosmos holds that 90% of its matter is unknowable and undetectable, and only there to rescue the cosmological model from falling apart... Does that 'work', in your opinion?
The church has no mandate nor purpose to teach science.
Why does the Bible teach about cosmology and creation?
Yes, monotheism and salvation in Christ are the main points of Christianity. Monotheism in the meaning of "only one, highest Creator", not in the meaning "there are no other lesser gods".
Yes, and salvation in Christ is an event rooted deeply in historical, flesh and blood reality of the cross and resurrection.
Is it wrong to believe that Biblical history is also rooted in flesh and blood reality, even if the modern scientific consensus says otherwise?
Modern cosmology, biology etc. can lead to atheism/agnosticism only if Christianity or God was presented to people as being necessarily connected to a flat earth, young earth, literal reading of the Old Testament or with a wrong view of the biblical inspiration.
Firstly, I've listened to a lot of flat earth Christians and not once did any of them suggest that salvation is Christ depends on one's cosmological beliefs. On the other hand I've seen several globe believers come close to charging Flat earth Christians with heresy for doubting Science... as if to doubt modern scientific consensus is to follow the whispers of the devil.
Christians with geocentric beliefs do not have a "wrong view of biblical inspiration"... It was the literal belief of those who inscribed the scriptures, that is, the belief that God really did these things in history, whether it be the flood in the days of Noah, or the day Joshua commanded the Sun and Moon to stand still, etc. They even worked hard to record and preserve a lineage for us, going back to Adam.
If they were, for example, presented Christianity only in the form of basic teachings (like presented in Christian creeds) and the rest was left to discoveries, they would have no problem. And they could focus on repentance, morals and good deeds.
Why isn't the whole Bible like this? Why did we need all of that cumbersome unhelpful history in the Old Testament? God could have just told us to remain faithful and seek our learned philosophers and high priests of natural science for the true answers to where we came from.
Therefore, you are the one producing the problem, for you and possibly also for others who would accept your version of Christianity.
Really... generations of people spinning off into Cosmic Carl Sagan-land.. (is the spiritual fruit of this not self-evident by now?) but it is the Christians who are holding fast to believing what the Bible says... they are the real problem. Because, why? They question the modern scientific consensus?