BlueSky was created by Jack, and he could have picked ActivityPub, but he didn't.
You know why most fedi developers have such a distaste for BlueSky?
Oh right, it's because Jack saw a need for monetization that couldn't work without a centralized infra.
Then he abandoned BS.
As much as you may think the SWF wants to bring ads to your fedi feed, I'm pretty sure you'll see ads on BlueSky first.
But the real ones will keep building, where it matters.
@dansup nothing wrong with ads