How about.

"I am responsible for my own actions" mode.

You click that, the phone switches into a separate user space. Securenet is disabled, which is what most financial apps rely on.

Then you can install all the fun stuff you want.

This is really a matter of Google not sandboxing stuff right. Why the hell does App A need access to data or notifications from App B.

> Why the hell does App A need access to data or notifications from App B.

Advertising networks. Just like how you see crap like a metronome app have a laundry list of permissions that it doesn’t need. Some cases they are just scammy data harvesters, but in other cases it’s the ad networks that are actually demanding those permissions.

Google won’t sandbox properly because it’s against their direct business interest for them to do so. Google’s Android is adware, and that is the fundamental problem.

The new "Terminal" app might eventually evolve into something like that.

This mode already exists. It's called "Install LineageOS".