Scott is an asshole and generally unliked in the conference room. Mitch has lost some troops over the past few years (notably both TN Senators, Portman etc.) but the MAGA wing hasn't really gotten much bigger; Vance is gone, Tuberville/Blackburns are considered punchlines, Lee and Scott are both not liked etc. and the institutionalists still carry a solid majority of Senate Rs

I think behind closed doors nearly all of that wing despise Trump (and there's a fair case to be made that absent Trump's MAGA Senate candidates over the past 6 years Republicans could be at 60 votes there).