Purity tests are pragmatic. The almost 200k already dead in Gaza are the biggest problem right now bar none. Our only advocate in Congress being squishy about it isn't going to fix that.
People get too attached to an individual like aoc and it blinds them.
That's the thing though. For supposed socialists, not supporting genocide or opposing a seller colonial entity aren't purity tests. It's practically calling the presence of hemoglobin in red blood cells a purity test.
The thing people are missing when they scream at Redditors about genocide or Gaza to justify dropping support for AOC is that most people including the leftmost Democratic voter who sheds tears about Gaza still feels an abroad Arab person's life to be of lower worth than a White or Asian life on a visceral and subconscious level. I even include most of the people who attended the Free Palestine protests among this, I am sure some swathe of them will object to this move by the DSA too.
You cannot counterargue with these people effectively by mentioning the Gazan death toll, or even sharing gruesome images of civilian casualties, because Israel-Gaza will always be clocked by them as a pet issue in relation to domestic policy. Americans as a whole have sat through too many wars and their accompanying propaganda, and are too poorly traveled to have any better than an elevated noble savage view of any wartorn impoverished nation's people. Even garnering sufficient support for ending the war and blight relies more on appealing to these people's western chauvinism than their sincere empathy for Gazans as fellow human beings