alt Hacker NewsIt's not really passkeys that are the problem, it's trusting your passkey to a third-party. But this is still a minor part of the market today, a much bigger problem to warn people about is the "log in with your google/facebook/etc account". Where you're handing everything over to a third-party as well, because it's so easy and convenient.
Passkeys, stored in Bitwarden, give a lot of the same convenience, but without the vendor lock-in. We shouldn't be scaring people away from passkeys, when commonly used alternatives are much worse.
It's the fact that there's no physical artifact that's the problem - there's no file.
You can't back up your passkeys and wind up with something you put in a safe on a USB key or something and vendors have been aggressively trying to make that harder.