Okay, so give it an off switch.

Gate it behind a long 20-step procedure. Put a video of a guy repeatedly telling the user "hey, hey, this is bad, don't do this unless you're a developer and know why you're doing it, it's a bad!".

I mean really you don't even have to go that far.

Just give it an off switch.

Maybe something like Android's developer mode, where you have to tap something (build version iirc?) In the about phone like 10 times. Won't find it unless you look.

Nobody is arguing against sandboxing.

The problem is sandboxing schemes that put the device manufacturers' needs ahead of the device owners' needs.

Traditionally when device owners bork the device they show up at the shop and have no idea how it happened, or it was the neighbor's kid. /s