I think you missed my point. It’s not about party governance.
The more reactionary elements are, to put it politely, bullies. Stefanik went to school a few blocks away from me and her evolution/devolution has been well publicized even before she hit the national spotlight. It makes her the perfect patsy.
She has been “rewarded” for loyalty, but has to double down on whatever. The problem is you have to do what the bullies want or you’re in the cold.
The issue for the public at large is you have a coalition of reactionaries, losers (the Colorado bartender with a gun fetish turned Representative) and compromised people whose only path forward is double down on extremism. There’s a non-zero probability that someone like Rep. Greene will accuse POTUS of being a alien lizard-person. It’s exactly the same as McCarthy.
It's not the same as McCarthy because they aren't nuking someone's access to anything other than Republican party leadership. McCarthy could take away random citizen's livelihood; Greene is just playing politics in a gross way with other politicians.
Just like people get to say "we decided not to associate with you".