I take it you don't use Apple products, because there are a bunch of 3rd-party apps out there that use the Face-ID or Touch-ID all the time. For instance the password manager 1Password uses biometrics to get into the app, if you choose.
From "just get an android" in response to someone complaining about having to pay $100/yr to publish a FOSS app on the App Store to "I take it you don't use apple products" or "That's all going to the government! I ain't gonna use that!" when someone only mentioned not setting up Touch ID or Face ID.
Maybe read, think, and then don't reply with snark.
While I do agree with this change, this restriction also clearly serves to further entrench Apple to be the gatekeeper over users. They can fingerprint you, they can serve ads to you, but oh anyone else no no no, that's evil and against your privacy™
That could change at the drop of a hat and a change in their TOS though, so it's best to be ever vigilant.
ok...