I don't think that blocking people from seeing posts really makes sense since they can just log out to see them, it's all public. So I don't really feel like hiding content from them is very useful since they can view it without an account. What is really needed is a way to restrict users from interacting, I made an issue addressing this it would be treated as a kind of profile ban, similar to community bans but for individual users but even when banned people can still view and read, like they always could before.