I agree and I still store my passkeys in proton pass, but that's more because there's no real option for storing them locally only. I really like passkeys and they make me optimistic about the future, it's just that I think the way they should work is that each device should have a passkey registered to an account, so that the access can then be revoked if the device was compromised. And it's even convenient in this way with the QR codes that you can use to temporarily share a passkey to then be able to add the new device.