@lrhodesL. Rhodes ⁂ 
@liaizonwakest ⁂
I've been to some of the Bluesky / ATmosphere conferences.
You are correct that there are former AP people over there (at AT) now.
I talked to a number of them. This (at the following URL) is a common reason I heard for why they switched from AP to AT:
https://mastodon.social/@reiver/114208310829137604
(I am quoting / paraphrasing someone who switched AP to AT. But, I heard others say similar, too.)
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@reiver@reiver ⊼ (Charles) 
@liaizonwakest ⁂ I would guess that the person who told you that had been involved in an opt-in/opt-out dispute. That seems to be the development issue that exercises fediverse users the most. Which is not to excuse the behavior, but that /is/ one fundamental cultural difference between here and there: Opt-out is the default assumption there. (Which is borne out by the next post in your thread, where a dev says they prefer BS because it provides the user data needed for an AI-driven filter.)
If you have a fediverse account, you can quote this note from your own instance. Search https://merveilles.town/users/lrhodes/statuses/116087400380718112 on your instance and quote it. (Note that quoting is not supported in Mastodon.)