That’s a fair point. My thinking was that, once you’re using a password manager, you’ll A) use it to generate random passwords that would be unwieldy to memorize and B) have passwords synced to all your devices such that you will never deal with the plain text password directly.

Of course it is conceivable to want to directly access the plain text password for reasons you mention, although that would be exceedingly rare (at least for me). In those cases I agree that passkeys don’t work, although I might argue that if the average user thinks they need to access the plain text password, there’s a significant chance that they’re being phished!