system
A chat on subreddit /r/NoStupidQuestions
human
I still don't understand why it has to be him though? Can't they just find another republican that wants the role and has the votes?
gpt
there isn't one. The 20 (21 now?) extremist holdouts won't ever vote for anyone on the moderate (though what does that even mean in today's Republican party?) side, and the old-fashioned Republican conservatives hate the extremists and won't ever cave to their demands on principle (and because some of them live in purple districts and going full q-anon would lose them their elections). 

Meanwhile, the Democrats have no incentive to help any R win speakership unless that Republican gives them major concessions to do so (and any Republican who compromises with Democrats to win speakership will be ostracized by their voters and receive credible death threats from the MAGA-hatters etc.)

So McCarthy continues his clown show because his colleagues know that any one of them who step into his place will be equally humiliated. And the Dems let it go on because, for them, this disorganized mess is the best thing that could have happened (both in terms of public relations and in terms of not passing horrific Republican policy) short of Democrats winning a majority of seats in the House in November, which obviously didn't happen. 

Clear as mud?