Not really. My generally-reasonable local bank has a sign up asking people to remove hats and sunglasses (I don't). It's about pushing whatever they think helps their security, often at the expense of yours.
Google isn't going to use its control of your phone to directly transfer money out of your bank account - that would be illegal, so Google is not a threat to the bank.
You are under attack from Google, and taking back ownership of your phone is a necessary step to defending against this. It's just not the bank's concern.
I guess there's that too. As someone that has strayed from the herd, I had forgotten about that whole planned obsolescence thing. Although the herd immunity does still somewhat apply to outdated devices, given the bank knows which Android version you're on, and can thus increase their prior that the device has been pwnt by 4th parties.
Google isn't going to use its control of your phone to directly transfer money out of your bank account - that would be illegal, so Google is not a threat to the bank.
You are under attack from Google, and taking back ownership of your phone is a necessary step to defending against this. It's just not the bank's concern.