I feel like the reason for Gen X making the swing is that too many of them never had a coherent and consistent philosophy in the first place.

The apathy by which many of them defined their generation lead to moral flexibility and giving up on trying to make a difference.

So, as they become collectively slightly wealthier, we are seeing a half attached conservatism, just as we saw a half attached leftism earlier on.

Contrast the modern generations with pre-WWII generations. There was significant economic pressure, and more community, so those guys had more uniting and pressing causes to believe in