It should be pretty obvious that a decentralized network that many use specifically to not be connected to centralized networks houses mostly people who do not wish to have their posts bridged to B...
Unless there's some actual technical reason why this a bad idea, I don't buy the "ethical" hand-wringing here. It sounds like just another case of not liking specific social media companies and wanting the defaults to conform to those personal dislikes.
It's exactly this. Bluesky has its problems but there is a massive overreaction from the fediverse crowd that it makes it hard for me to sympathise with them even if I agree on the principle.
I think the fediverse, and that includes Lemmy, have this warped idea of what Bluesky is and what ActivityPub/the fediverse actually is. They think ActivityPub is the de-facto protocol for microblogging, when it has glaring issues that Bluesky wanted to solve with Atproto (the queer.af debacle is a great example of this, imagine if you've got an account on queer.af and you want to move your data to a new instance). If you're a Linux guy, you might have seen parallels between ActivityPub/Mastodon vs. Atproto/Bluesky and X11 vs. Wayland.