The double standard is all on the part of Gaetz and company, in particular the ones who rejected Scalise, who was after all, the preferred nominee of the party.
There is no two ways about it. The spoilt children here are Gaetz, Jordan, and the other self-proclaimed "conservatives", and they have no cause to complain when their own stupid childish tricks are used against them.
Maybe, just for once, they should learn how to persuade, instead of going on crusades where they're the only true believers and think they have the right to bludgeon everyone else into doing what they want. That only works when one has an outright majority, and that is a long, long way away from the current state of affairs.
Except that the Establishment hacks have been ruling by minority for decades with the 'Gang of X' tactics, and now are pissy it was used against them, but are trying to justify doing it back because 'Gaetz did it first'.
Scalise was 'preferred' candidate in the caucus 113-99, hardly a landslide. Certainly not a mandate. Which doesn't matter anyway because it's a floor nomination, and as was said members are free to vote for who they choose, including Scalise, and they didn't.
Gaetz didn't bludgeon or strong arm, he made a deal, and McCarthy broke it. Meanwhile the Establishment hacks were willing to savage Gaetz for it yet now refuse to make any deal, except with the Rats. Bottom line is they aren't going to play ball till they get their way. Who's the problem here?