This isn't about controlling what others see - I'd just like for users to be able to block entire instances, because blocking 3 more porn communities every time I reload All gets tiring.

I like porn when I'm in the mood for it. I've got an alt on lemmynsfw for that. Though I feel your point about high quality content: The specific stuff I'm interested in hasn't had a new post in a month. The only thing I still use reddit for, really...