>I expect this kind of stuff from the Moral Majority, but it’s painful to see it from the Former Underdog Turned Moral Majority.
This is the nature of power, and an example of the Iron Law of Bureaucracy. Once a particular version of an ideology becomes the preferred political weapon of the majority, displacing the previous one, it can be considered to have become the Moral Majority.
When this happens, the rational people (those who cared about the ideology as a means to an end rather than an end in itself, to summarize the Iron Law) begin to look for greener pastures. The people that are attracted to the ideology simply because it has political capital begin to pervert it, twisting it further and further from the truth the ideology was originally designed to address. These people care little for logical consistency, and tend to create contradictions until another ideology (pushed to prominence because it was forced to be liberal to accept the good people seeking refuge from the first one's oppressiveness, and relatively parasite-free because of its lack of political status) comes along. And at that point they jump ship, the new one becomes the Moral Majority, and the cycle starts again.
Liberals have already left Leftism, because Rightism is a better fit for liberal thought at the moment. Authoritarians are the only ones left on the Left, simply because they like the power of what the idea still represents (the general population has a lot of lag time and takes a while to catch up; it's faster if they can outright defy the authoritarians and not need to worry about finding another job or house if they lose theirs for political reasons- the 50s through the late 70s gave that power to a lot of people which is why so much change was able to happen; whereas today due to economic slowdown this process is a lot slower).
This tension between liberals and non-liberals is the real Culture War. And so it rages.