Many banks nowadays at least try hard to push you to use some kind of app method to verify transactions, in place of other TAN methods. Though my main bank still lets me use an old-fashioned chip-TAN device, not all banks would do that.

I’m on Graphene OS, and luckily all my other banking apps work on there. I’ve got them isolated in another user profile, seperated from my daily use apps, so only the banking profile gets Google Play services enabled.