Yeah, I'm really getting the feeling they are just trying to bury it and ignore it. I was having trouble accessing the modlog, but when I was able to, they seemed to have gone through the effort to eliminate a lot of the entries, which included my account purge, ban, and ban reason. They still haven't even bothered to answer the ticket I put up on tickets.mastodon.world, maybe I'll add a screenshot to that later to show the ticket status and the time it has spent as unanswered. No admin has replied to me directly, and the closest I've seen any admin reply on the issue is to criticize the kbin.social instance as reliable because of the criticism they get on them.
The real problem is this is being done in bad faith, and if that's their core drive, then the only thing they'll do in the future is make-up better sounding excuses to cover their asses.
I'm not sure what's up, but entries have certainly been removed. This was then: https://web.archive.org/web/20231019235547/https://lemmy.world/modlog
This was a more recent IWM archive: https://web.archive.org/web/20231021224842/https://lemmy.world/modlog
Search for "HEISENBERG" in both and then read back through to the most recent to get an idea of how different they are. Some bans are showing up, some aren't, a lot of them aren't even there.
I'm no expert, but modlog isn't exactly the same across all instances. I think actions like a user getting banned in their home instance do get propagated to the other modlogs, since my ban got propagated to lemmy.ml's moglog, but this user's ban in lemmy.world wasn't.
I haven't touched the lemmy code, but seeing what's mentioned over at https://github.com/LemmyNet/lemmy/issues/2349 , the modlog seems to be just a combination of database tables that are normally maintained server side but, just like in any other database, can be edited manually.
Only trust the modlog as much as you trust the server you are reading it on.