[majewsky]

> As long as biometrics don't unlock secrets (keys, passphrases, shared data etc) it is fine.

That's a weird definition of "secrets". Mails may contain secrets. Pictures may contain secrets. Messenger posts may contain secrets (cf. all the leaks of chatlogs).

If I remove all apps from the homescreen that may contain secrets, that leaves me with the flashlight and Candy Crush.