It sure looks real to me. There's a detailed reflection of the hand on the table and the ring is clearly visible. Reflections are really hard for AI for now.
I don't think recommending blocking users is a good idea. It could have effect of creating "holes" if a user posts in multiple communities. It seems best to block the community to remove the majority of content you aren't into. That way you still see a users posts in a community that you do like.
Yes, please!