You share public keys when registering the passkey on a third party service, but for the portability of the keys to other password managers (what the article is about) the private ones do need to be transferred (that’s the whole point of making them portable).

I think the phishing concerns are about attackers using this new portability feature to get a user (via phishing / social engineering) to export/move their passkeys to the attacker’s store. The point is that portability shouldn’t be so user-friendly / transparent that it becomes exploitable.

That said, I don’t know if this new protocol makes things THAT easy to port (probably not?).

Also I expect there should be more surveillance around powerful people like Larry Ellison, right?

The more powerful, the more important is to ensure good behavior, and the more public / peer-reviewed the AI model and its logs should be to avoid tampering/laundering.