If you're worried then don't use it Lol.
I think people are taking Face ID wayyy out of proportion. It's not that serious.
The talk of being robbed and the robber holding your phone to your face, the talk of girlfriends unlocking your phone while you're sleep... Now people are afraid of accidentally sending money?
Jeeeez Louise.
You have to hold the side button to use face id. I know what's the point to have a button when it could be hands free