This is an (aggressively?) conventional idea that I have an (I guess) heretical opinion about. I'm somewhat persuaded that there is a recent outbreak of intolerance for differing ideas and ideals (though I suspect every generation expresses a version of this opinion as they get older and become out of step with cultural evolution), but I don't think it has any particular political valence. I have to watch my tongue just as much around "aggressive conventionalists" on either side, they just have different conventions. It's just as disqualifying as the x-isms from the left, if you care about staying in the good graces of convention on the right, to express opinions like "immigrants are good", "the 2020 US presidential election ran smoothly and had a clear victor who was duly inaugurated", "gender is a social construct", "people who are attracted to others of the same sex are normal and should have the same rights as anyone else", etc. etc.
Honestly I think this whole thing is as simple as, people just have different views and lots of people of all stripes don't want to agree to disagree with the people they spend most of their time with.