Blocking keeps my feed nice. See people being assholes? Block them. See a post discussing something I don’t want to hear about? Block them. See a community I don’t want to hear about? Block them. The greatest thing about social media is the ability to never have to interact with someone again at no detriment to them. Blocking is good.
I mean you should be able to unsubscribe the same way as you unblock. Would not be bad to have an override to so you could go through and unblock some stuff. Like if someone signed up for my blocklist they would have a bunch of sports stuff blocked because I have no interest in it.