I'm going to bite on this again, aren't I?
I saw the entire history of this issue as it happened here, live, and I've been directly involved with some of the main characters
It started out on Mastodon with a Mastodon Authority(tm) ("Masto Migra") selectively clipping some Very Famous People(tm) who (allegedly) were all going to move off to Bluesky because they weren't being treated with the deferential obeisance that their Position In Life(tm) had led them to expect they deserved
That's the real crux of it
Also see: "DON'T YOU KNOW WHO I AM?!?!?!"
I've been blocked by several them at different times; the triggering keyword (I'm not making this up) in two cases who shall remain unnamed was literally "hubris"
Hubris: "... exaggerated pride or self-confidence, often a dangerous character flaw in ancient Greek tragedy"
Sure, these people know some things, but lots of people know some things
Basically these people *really* need to get over themselves
There
Kicked the ant hill, again