A thief flags you down, grabs your phone and makes you unlock it using your thumb.
A cop opens the cop car door, grabs your hand and unlocks your phone, or even easier, face unlock.
Granted, guns and torture are rather effective as well, but is anyone entirely against fingerprint unlocking?
I run GrapheneOS on my phone and reject all biometrics on principle not because I have anything to hide.
But you do have things to hide. Everybody does. That doesn’t make it bad.