when people say "Elon's ownership doesn't affect me, I just use the chronological feed" they elide the other side of this which is that which of your posts the site shows are chosen by the nazis now.
I don't think it's a coincidence that a bunch of the left wing people I know who still seem to be happy with posting on Twitter are posters who spend most of their day posting anti-Biden-from-the-left stuff that the site's owner would like to promote as well.
I post anti-Biden-from-the-point-of-view-of-being-against-genocide on this site, and I see tons of other leftists of my stripe. Are there left wing people who are actually for Biden? I mean, they might vote for him in the end, but they aren't for him, just against Trump.