Lemmy instances won't search outside of their own databases if you're not logged in.
But if you are, what it does can be recreated on a command-line by doing: curl --header 'accept: application/json' https://nerdica.net/.well-known/webfinger?resource=acct:nate0@nerdica.net | jq .
edit: However if you webfinger your mostr.pub account, you get: {"error":"Invalid host"} so any ActivityPub instances will only ever be able to find you if you've interacted with them in some way to get a database entry. Edit: also, I tried to do this again, thought I'd try the npub1 account as well, but got Gateway Timeouts, so there's a bit of jankiness going on too.
Instead people just make this shit up and go after stuff that was never shown and never occurred. Never seen any other fandom do this.
It also happens with The Last of Us Part II, which points to a probable cause: the same factually wrong criticisms get repeated not from individual engagement with the original media, but rather with professional shit-stirrers on YouTube. Someone rides the algorithm to dunk on something popular, and their terrible takes are recycled forever.
'salright. The other upload wasn't directly linked, and was an edited and watermarked version, so if they'd been uploaded the other way around I'd have deleted that, but this may as well stay for anyone who missed it.
Dunno, I'm not subscribed either. Can't imagine it's anything good though (if it is, I'll delete my post and phone Disney to apologise).