I didn't mean after you logged in... I meant as the default login option to a new Linux box. Passkeys are strong because they are asymmetric, but we currently fall back on symmetric passwords to manage access to those inconveniently-large private keys. How will you reset your Google access if your computer hard disk dies or your phone drops into the ocean if Google will no longer allow passwords? I figure that independence from big brother and fault tolerance to hardware failures would be appropriately-robust if this great new approach could work offline bootstrapping the security of a new computer.