Passkeys can be tied to a root of trust, like those owned by google, microsoft, apple.

Currently they aren't tied to that root of trust.

Most of those organizations have shown that they don't want people owning their own devices or being able to run their own software, and they use developer attestations, IE a revocable programming license to accomplish that.

Tools like android's safetynet makes it so that you can't run banking apps on a phone running your own software. One that bypasses developer attestations.

Passkeys are currently an open standard, but attestation is built in such a way as that it could be only usable on n approved operating system with programmer licenses.

Big websites like amazon, or websites you need to exist in society, could gradually start requiring the usage of attested passkeys.

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There is a clear path from passkeys to the death of general purpose computing for 99% of people. Don't be a useful idiot, don't assume these corporations have your best interest in heart. See this for what it is, a path towards killing people's ability to run unlicensed software on their own devices.