To follow up on the play integrity part - I believe it's possible to fool play integrity too, so good luck.

But anyway, what's the point? Do you assume that the immediate thought of person who got conned because of root access will be "o s**t, let me first remove the root and then I'll call my bank"?

People who root most likely know what they do. People who use Magisk know even more. People who use zygisk are most likely pros who will eventually find a way to bypass your protections. Get over it.