I had to do a government ID upload and a live face scan to install my banking app on a new phone even though I had other devices I could have used to authorize it. It made me want to switch banks, but where do you go?
For what it's worth, Venmo will not get access to your biometrics data, it's a black box in which you specify a desired level of authentication and the OS just returns ok/not ok.
It is, however, to make you use Venmo more easily, thus more often, thus spend more money through them.
Just yesterday I got a venmo prompt to add biometrics for "security". F off.