Simple, in the "Privacy" setting, you should be able to change who isn't allowed to access your profile instead "everyone who isn't following you" this could prevent hate, mean comments and spam on your profile that you don't want.
It would be nice to have individual blocking but at the same time we should just make do with what we have. You can make your profile read only, you can follow the people you want to view your profile or just leave it open and let mods handle the people who write stupid things.