Passkeys will be around until someone figures out a fatal and unrecoverable weakness with them.
From TFA... not necessarily fatal or unrecoverable, but probably super annoying or problematic:
Passkeys are not foolproof though. A compromised device might expose private keys, and a successful social engineering attack could dupe a user into creating a passkey for a malicious service.
There are also potential problems if the user loses access to a device that stores passkeys – another means of authenticating to a passkey-linked service would be required, which might involve passwords or a more involved recovery process.
Also, passkey portability between credential providers (across platforms or password manager applications) is still a work in progress.
While it notes, "a compromised device might expose private keys" it fails to be clear that it might expose *all* your private keys. I'm not a fan of having all my eggs in one basket. Also, using bio-metrics to access your passkey means no, or less, legal protections from searches -- so use a long PIN, or password - oh, wait ...