If it had been an opt-in system, the response would probably have been far different.
Why are Fediverse people only angry about it now? It's an open protocol. If you want privacy, don't publish something for the entire world to see. That's just basic common sense. At the very least, use Mastodon's privacy controls. The Fediverse is not special here, it doesn't get to destroy the open Web for everyone else.
As a controversy, it's been blown out of proportion. It's just Fediverse admins setting the moderation policies for their own sites, as always.
As for the fediverse destroying the open web for everyone else, I think you’re hyperboling quite a bit, the fediverse has done mountains to make social media more open, probably more than everyone else.
It's the same situation with Threads.
As for privacy I disagree with you. There's nothing because nothing has been discussed, but the technical feasability should never dictate what we want as a society. When a family member dies, even though the news is known you know how to behave, who to share that information with, what to say. Would you be okay with a company coring up to you and saying "hey we learned your mother died, would you like to tweet it ? It is free !"
And someone else will just go build an opt-out (or maybe even no opt-out!) bridge.
And again, it wasn't about Bluesky in particular. If Google announced that they were going to ingest all Mastodon content and post it in a new Google Groups kind of thing, they'd be pretty understandably upset about that, too.
In general, "if I wanted my stuff on Bluesky, I would have put it there". It wasn't the bridge creator's decision to make.