I can assure you the YouTube rabbit hole is still there. I am constantly recommended right wing, feminist b& type vids
FWIIW all the chimping in the threads about death threats: these were extremely common in the old days of Usenet too. I've lost track of them; from all kinds of arguably insane people, satanic cults even; more recently lunatic grad students mad I made fun of their field on my blog. So was doxxing. Nothing ever happened, and I have no respect for people who report them like it's news. While it's probably happened by now that someone's internet beef turned into actual violence, the ratio is absurdly low. If you can't abide some idiot being mad at you, stay off the internet I guess.