Literally this. It's as easy as making a Bluesky account and mass changing all links to it, and putting a permanent banner on their site with their handle.
"Users protesting by leaving should weigh the broader social implications of staying versus exiting."
Hmmn, let me weigh up the broader social implications of . . . holocaust, world war, racial purification, hatred and divisiveness.
Strangely, I think i can trust the gut on this one without having to do all the complex social cost benefit analysis.
We just could not leave the NAZI camp the food was just too good. I get it corporations. When the dead bodies start showing up you will just step over them.