No they wouldn't. We don't have to speculate about that; Android already has a toggle to allow direct installation of apps, and most people don't turn it on.

Many Android devices allow unlocking the bootloader and gaining root or installing an alternate OS without exploits, and there are quite a few third-party Android builds for supported devices. The process is not beyond what a person of average intelligence and modest computer skills could pull off with some patience and a video guide. Only a handful of tech nerds actually do it.