OK but Matt Gaetz is right.
They've tried to shut down the government twice.
The first time, McCarthy let Biden get pretty much everything they wanted.
The second time, the House Republicans' main goal was to abandon Ukraine to Russian conquest. They succeeded but only because McCarthy made a secret side deal with the White House to do standalone funding for defending Ukraine after the fact.
So they're not getting to do the evil things they want to do. What's the point of keeping McCarthy on? He's not maliciously hurting America and he's not helping Russia, he should be replaced with someone who will.
It's different.
Republicans want victories over a Democrat Administration, any victory even procedural.
If McCarthy can't get them, then he is presented as the obstacle to even the smallest of victories.
The whole Ukraine thing is because Biden is equated with Ukraine, so support for Ukraine is strongly partisan.
The main priority of Republicans is beating Democrats and whatever Democrats support at any time, that's GOP leadership weak spot, they need to oppose everything or else they are not good Republicans.