It seems like https://lemmygrad.ml/ is blocked as well. I've tried viewing through this instance and it doesn't work. I've looked at some accounts on https://lemmygrad.ml/ and they don't have any posts on any other instances.
From what I understand the instance creator denies that certain historical events occurred, and people generally tend to not like it when others attempt to re-write history.
Technically lemmygrad isn't "blocked" and you can make an account on that instance if you feel so inclined, which personally I don't.