Agreed I'm not the average user but what does that have to do with the passkeys not being exportable between devices/clouds and instead being forever locked into only that vendor's cloud? The average user does not own only Google or only Apple or only Microsoft products nor do they want to enroll every account for every new device manufacturer key store instead of have options to use something else. This isn't predicated on existing use of a password manager it's just also a downgrade from that aspect of them.