The fact that nearly every passkey implementation is lacking in a variety of very impactful ways... is a very good reason to _not_ use passkeys.
When every passkey interaction is a different variety of user interaction nightmare, it's not very convincing that it's a good idea in the first place
They're talking about a web-based QR code solution separate from passkeys.
Passkey QR codes are only WebAuthn via CTAP hybrid transport (with BLE verified proximity)