@Sh4d0w_H34rt @stux I mean, I would go by what you see in practice, not the defined rules. The server admin can block individual users from interacting with their server too, if that's enough to solve the issue.
I feel like instance blocking is a statement that everyone on that server is awful. There are servers where that's the case, but many where the communities are more mixed.
I think instance blocking should always be considered case-by-case.
@ocdtrekkie @stux a little while ago a user I was following doxxed someone so I reported the post and blocked the user then not long after another user of the same instance did so again. When I reached out to the instance admin they said that doxxing would not be restricted but I could request its removal.
I blocked the instance the next day.