If Reddit wants to kill itself, who am I to change its mind? (I already tried and they didn't accept my feedback because the form was rigged against being completed)
It definitely can. Just because the website still exists doesn't mean it's still "alive". Facebook is still around and there's nothing actually relevant on it or about it.
Virtually all of reddit's content is produced by a very small fraction of the userbase.
I suspect there's a fairly large overlap between people who are fed up with reddit's bullshit, and people who actually post and create content, not just scroll.
Reddit is cutting off that content supply to get more of the scrollers.