I’m one of the (independent) board members of Bluesky and I can say with confidence that I don’t have any of these concerns, everyone involved is deeply aligned to the PBC’s purpose of “To develop and drive large-scale adoption of technologies for open and decentralized public conversation.”
None of the concerns I've raised are about alignment. I'm not concerned for Bluesky's investors. I'm concerned about the long-term viability of the platform given its adoption curve and its financing.
If it helps, nothing I'm saying has anything to do with whether ATProto will succeed. ATProto could succeed (and fulfill one possible overarching goal of the PBC) and Bluesky would still not be a long-term viable forum for scientific communication (because it will stop existing in its current form).