Hans Herman Hoppe once posited the theory that the great innovations leading up to the modern world happened because evolutionary and societal selection pressure were such people were being bred for high intellect. Then the revolutionary movements began (1848 being a big year for such things) and subsequently society apparently bound itself to select for other things. Intellect is no longer selected for in most human populations, though a middling wit is beneficial, because a conformist bureaucrat can get his hands into the cookie jar. But nobody ever tells their mommy they want to grow up and be a conformist bureaucrat.
Anyway, I just don't have time to do an extensive review of the literature, but I suspect the gestalt of Christian theology, literature, etc- fell.
I have mentioned before that I don't think there were many times where all Christians believed the same set of dogmas, rather most Christians held allegiance to a bishop and a local lord or king, and if there were much inquiry into doctrine, it usually happened among the more learned, possibly in a monastery somewhere. But the general belief of the people was to follow their bishop. It was quite possible that the local shepherd or pig farmer realized metaphysic was simply not his forte.
But the revolutions destroyed these relationships.
So, in a more general sense, even in other religions, I believe we see this move from tribal gods, myth, and superstition, toward a more profound understanding of God, the sort of stuff I struggle to put into modern American words occasionally. He is 'the perfection' that we struggle for and cannot acheive; thus we find Him eternal, for through our struggle we find ourselves separated from Him by infinity. For most religions, this is as far as it goes, and one can only ever be servant, but Christ is this perfection taking us to Himself, crossing the infinite, becoming incarnate. There is more, of course, but let me move on to what is happening now- a return to a tribal god.
There are a myriad of ways this is happening, because by 1848 we already had plenty of dissent and doctrinal disputes, but I suspect pre-revolutionary disputes were among authorities, and were ultimately questions of power. One could argue that the revolutions essentially shut to door to heaven- by removing the means via which the old world strove for perfection, the revolutionaries redirected our gaze to ourselves and that which is below ourselves.
Tribal psychology becomes important, and I have, on occasion, gotten the distinct impression there are sorts of people who read, not so that they can better learn the truth, but so that they have something to say to non-tribe people, for democracy gives us the illusion our voice matters and that we may actually convert people to our way of thinking.
The starting point is likely the over-emphasis of Christ as man, which allows Jesus to be firmly placed into a tribe, and a subsequent hack job to the whole doctrine of the Trinity done to reduce something universal to whatever makes the in-group comfortable. You can't really make the ineffable fit into a cabinet, but you can make an idol and call it father.
There is much more besides, and as I mentioned in the title, this is a possible dissertation, and something I would like to see researched so that I could know if it is true.