Maybe so, but I think asking the leadership class to be anything but mostly selfish and mercenary is really moving the goalposts. I think its genuinely true that at any given moment in human history, from the medieval european "universal" catholic church to the Tibetan Buddhism, its people in charge are, according to the purported moral standards of the time, mostly out for themselves, but happy to use moral or mystical language to justify their position in the hierarchy. Given that, the current moment seems pretty much like any other with respect to the culture producing/running entities.

Maybe you just think that the decrease in the power of like evangelical Christianity or conservative Catholicism constitutes a turn towards materialism? I just don't see it. Unjustifiable metaphysical beliefs are rife in society and the decline of purely Christian hegemony (if it is happening at all, given that we have had a series of pure wins for Christians at the highest levels in this country recently) is a separate thing.