It used to be that pushing positions based on morality was taboo on both the left and the right. Then the social left started pushing things that it wanted purely because of morals and the much larger, much better organized religious right realized there'd be no significant political pushback for doing so with things they've wanted.

In the past the religious right in the US had been kept in check by the fiscal conservative and neocon wings of the party. But after Trump, those wings no longer have the control they had before.