There is one legitimate reason to have attended the meeting of fediverse admins with Facebook/Meta and that’s if your goal was to leak the contents.
(We’re waiting.)
Personally, I don’t see how I can trust any fediverse admin either stupid enough or malleable enough to sign an NDA with Facebook/Me...
Seems like they had to sign an NDA. The thread came up when I was searching various tags, so I have no more context. Hopefully turns out to be a big (vegan) nothingburger.