It might be nice if lemmy clients (voyager, default client, etc) would make a suggestive pop-up:
Would you like to block this community? Your downvote ratio is 100% over the last X days/Y posts.
This is good for lemmy because it will let users have a more positive experience, its helping guide people to get better use of the user interface.
That’s fair and I’ve suggested the same before as well.