Some day it will make it's way to banking apps/sites being unusable on OSes other than approved "secure" ones.
That day was years ago. Many banking apps refuse to start if you even just have your bootloader unlocked, and some banking websites only support Chrome, some really crappy ones even only Chrome or Edge on Windows specifically.
That is already the case on Android phones with unlocked bootloader.
Banking apps (in my experience) will either completely not work or only with limited functionality when run on a unlocked phone.
I have at least one app that disables major functions when Developer Mode is active in my stock android, even with a locked bootloader and without root.
Nice. Id instantly stop using those apps. But it looks like it just checks if dev settings are enabled. You can disable them again after unlocking bootloader you know :D
Oh the app completely doesn't load on a unlocked bootloader, this is on a locked bootloader system where I just activated Developer Mode to show the message of the app.
I know that I can deactivate it again 😜
Unfortunately I don't have a system with unlocked bootloader right now to show the message that comes up then.
Unfortunately I have to use the app to be a able to take card payments for my business.