Passkey is some sort of specific unique key to a device allowing to use a pin on a device instead of the password. But which won’t work on another device.
Now I don’t know if that key can be stolen or not, or if it’s really more secure or not, as people have really unsecure pins.
I don’t think so, but whatever.
What do you mean? Do you not believe the anti-phishing features will work as described for a reason?