The traditional remedy for such extremism was to expose the links to voters, who would be duly horrified and vote her out. But MTG's voters knew exactly who they were electing, and I will wager that she wins again with ease in 2022. She is now a culture hero thanks to the Democratic legislators who voted against her.
Overriding the voters' decision based on our own notions of propriety, in the name of saving democracy, is a sure path to ruin. As long as her conduct is lawful, there is no defensible way to get her out of Congress except the hard way.
But not seating MTG (or maybe Boebert) on committees seems like less of a problem, and it doesn't seem any less legitimate to me when the majority of the House does it to MTG than when the Republicans themselves did it to Steve King; in both cases, it wasn't the will of the voters that elected these people that created the consequences.
Also: it took a long time to get Steve King out, and an superheroic amount of effort from JD Scholten, who had to know his chances were slim and kept fighting anyways; I don't know that you can expect Scholtens to keep appearing to fend these monsters off.
But just looping back to the subject of the thread: there's a "rule of goats" thing about wishcasting the assassination of a political opponent, and, in collaborating with people who are almost certainly not being ironic in discussing the possibility, MTG has gone way beyond being an ironic goatfucker.
I think people do hyperventilate about right-wing conspiracy nutjobs. But lending institutional support to actual insurrectionists isn't just Twitter drama.
(I don't think Boebert is in quite the same league, but give it time).