I was talking about the missing modlog entries. When you ban someone with the “Remove Conent” option, sometimes the post(s)/comment(s) don’t show up in the modlog. The only time we intentionally completely disappear (“purge”) something is if it is something objectionable in the extreme, like CSAM. Personally I’ve not yet needed to use it.

If users on other instances were able to see something that had been removed, that was because the removal request hadn’t propagated to their instances yet, or never arrived at all. We can’t make other instances remove things, we can only send requests that they do.