I once saved a non-technical person from installing a fake banking app on their Android phone and losing all the savings they had. If I wasn't there, our whole family would probably be in financial trouble. Being able to do whatever you want with your own device is great if you're tech savvy. Most people will either not use that power at all, or use it to do something they didn't actually intend to do.

A good compromise here would be an ability to enable developer mode, perhaps with some quiz or test that checks if you have the right skills to handle such a responsibility.