You are talking about phones made by Google. I am talking about ALL the phones using Android and how difficult or sometimes impossible it is to use anything but Android.

That’s not what you were saying. You were explicitly talking about Google. Also, implying it is Google’s fault that other manufacturers don’t let you install other operating systems easily is pretty bizarre. If you want to complain about that, at least complain about the right companies. Those are usually the phone manufacturers and/or the SoC manufacturers. The SoC manufacturers often times are particularily problematic, since they often do not publish open source drivers at all or in a very limited fashion.