Similar to how quora forces you to sign up if you click a link coming from a Google search. I just avoid these sites altogether. Unfortunately, I’m but a drop in the ocean.
Quora is at that point in its lifecycle where it's barely any better than Yahoo Answers. The nice, knowledgeable people that used to provide detailed answers are long gone. Like Medium, it's full of content marketers and clout-chasers who've figured out that getting their answers on Quora is free SEO for their brand.
They don't actually remove the content, just hide it with an obnoxious scroll-down-to-trigger-login-spam JS and a blur content blocker. It's dismissed with one right-click -> inspect element -> delete div
Alternatively, typing '?share' at the end of the URL works too. Quora is awful these days though so I rarely use it anyway.
I remember reading Google would start penalizing these sites for using these dark patterns. Would losing traffic from Google search force them to change their ways?
A site like reddit? Very doubtful.
Quora reminds me of the experts exchange times. They are "improving" themselves into irrelevancy.