I'm not sure how unity or the lack thereof are measuring sticks for credibility when it comes to the word of God.
The way I see it: There are places in the Bible that speak of disunity happening before the ink was drying as the scripture was being written, such as 3 John 1:9. Never mind the sure prediction of 2 Peter 2:1 and for near two thousand years that's been a historical condition within Christianity. Are people to believe that during such a time seeking the Lord is a reflection of being less credible? That it's only an MJ thing?
Don't get me wrong, I believe building relationships with like minded believers is a good thing (He 10:25). However, it just may be that given both sides of the this particular coin, for some people the unity or the lack thereof can be more of a measuring stick for that individual looking to build their own credibility.
Well, you are probably trying to help, but if I have to be honest, to me it seems like this is the type of sentiment that I was referring to in
section 2 of the OP.
There are people who have a early Protestant-like tendency to present disunity as good, and are skeptical/suspicious toward any attempt at unity. Unity is seen as "people looking to build their own credibility," never mind Mark 3:25 and all of Paul's exhortations to unity, and the scriptures that many interpret to mean that the church started by Yeshua would not die out, his teaching would not die out, etc.
This modern notion that all ideas are equally valid is not Biblical. The idea that the true religion of God would be hid for over 1900 years and only recently surface in modern times is very distinct to MJ, and offensive to everyone who belongs to the older forms of Christianity.
I think people will make any excuse they need to make in order to justify their lifestyle. If they don't want to have fellowship or organized unity with other believers, they will find an excuse to remain as they are.
All I can do is quote from the OP:
I think disunity/individualism is not a necessity, and there are MANY examples from the past where divisiveness and individualism have been great sins, causing great harm to God's people and his religion. I think disunity is not essentially good, but rather something that can have both good and bad effects. It is, to be honest, extreme foolishness to view disunity as a necessity or as something that is only good. That leads into solipsism, that leads into elevating yourself, or simply put, arrogance. The same sin that traditionally led to the fall of the Satan.
(Immediately prior to this I delineated a distinction between rich individualism and poor individualism, and between rich unity and poor unity, which I think is important. )
The point is that while we can accept that the current epoch requires conforming to the individualist reality, we can still acknowledge the preferability of unity, including "big unity" as found in the popular world religions.