You're missing the point. It is "just" the act of downloading and installing, which were seen as normal things to do. However, by calling it "sideloading" they can then attach any meaning, any implication they wish. This is now something different and wierd, not something normal people do, does your mom sideload? I'm pretty sure the battle for control of your phone that you bought was lost as soon as we allowed them to call it sideloading.

That would be great if we didn't treat factory workers like the dirt on the bottom of our collective shoes. Every factory I've ever worked in has been depressing at best and abusive at worst, none of them ever made me feel successful.