Usually I just go to the instance e.g. feddit.nl and write feddit.nl/modlog, but when a comment gets removed from a thread, I assume that only the moderator from that thread has that power, so it will be in that thread's instances' modlog, but I'll admit that I'm not 100% sure that's what modlogs show. If somebody reports a comment from another instance, who does the removing?
PS: I can't access lemmy.ml actually and when I get the fediverse link of that discussion it turns out to be a lemmy.zip instance, but each post seems to point to the poster's instance, so I'm confused :D
Added context: the removed comment is from a hexbear, which I find even more ironic, because it was one of the more level-headed ones :)