This phenomenon is likely that conservatives and libertarians don't center their entire lives around politics and make it their religion like lefties do. Most average, respectable people would rather not concern themselves with politics at all if they had their choice.
But what people refer to as the far-right or as you put it "extreme right" is simply a growing sect of conservatives and everyday people who have seen the insanity of radical-left policies and societal effects of "progressivism" work their way into their lives, and now they're finally standing up and pushing back.
So if you want to blame anyone for MTG, Boebert, etc, look no further than the Dem party, which has not just slid but sprinted to the left over the past decade or so and forced their deluded religious ideas onto people against their will. The past hundred years or so has consisted of Republicans being weak, spineless people who caved on every demand of the democrats. So if The New Right is more authoritarian than you or I would like, you only have leftists to blame for that.