I don’t think that fully explains it; my own comments in that thread here are missing there, and I don’t think I’m banned from lemmygrad because other things I’ve posted are still appearing there - including this very thread we’re in, the copy of which on lemmygrad has zero comments.

Also some of my other recent posts are missing there, despite the communities I’m posting to here being federated there. Also my recent display name change is not reflected there - although I’m pretty sure I did that before I made this post which is there (albeit without any of the comments). My previous display name change did carry over, however.