Despite the end result being the death of everything within a single lifespan and the eventual destruction of the entire Earth in the new term future, I was surprised it would not be more immediately destructive. 1 cm/s sure sounded like a pretty fast expansion.
I don’t trust it because there’s no believable plan to make it commercially viable, so it’s just going to end up defunct or enshittified. Mastodon is up front, it’s a volunteer service that you can either pay for or roll the dice on the instance staying up. And there’s a built-in way to move on when one goes down.
BlueSky is a B-corp, which theoretically means they can say their mission takes priority if sued by an investor in court, but doesn’t in any way require them to make it the primary goal, and the reality of funding and money and investors means that’s almost certainly not going to happen.