I doubt it, you can still block seeing posts from accounts and block them from interacting with you which is the whole point of blocking.

Apple's guidelines aren't super specific but I don't see where they would require letting you block someone from even seeing your posts.

To prevent abuse, apps with user-generated content or social networking services must include:
A method for filtering objectionable material from being posted to the app
A mechanism to report offensive content and timely responses to concerns
The ability to block abusive users from the service