well, the argument is that for strong passwords you will need to use a password manager anyway. Which you will sync somehow, which will sync your passkeys too. So in the end you might as well replace all your passwords with passkeys except for the one password you use to access your passkeys in your password manager / the master access basically. The one way to make sure that you never lose access. I think this makes sense, I'm also very dependent on a password manager now.