You can configure a passcode to be a custom alphanumeric code.
That’s more like a password
I know, but the correct term is still "Passcode" and we should use it to avoid confusion (with the 1Password password, for example).and you don’t have to reuse it anywhere else.
It looks like I didn't quite get my point across in my analogy. It's not about reusing the Passcode intentionally.
It's about the fact that authentication of Apple passkeys on iOS fall back to the passcode and because of that, the passcode is like a password that, besides unlocking your iPhone, is also reused across all your services for which you have passkeys configured.
