I've been following "hackery" spaces like the console homebrew and Android custom ROM scenes for almost 2 decades now.

There has long been a culture of deliberately making the installation of certain types of free and libre software needlessly complex and using deviancy-coded language simply because it makes the in-group feel cool and elite.

This whole idea of "sideloading" and related terminology being Google FUD only came about in the past couple of years. For the decade before it was people on xda-developers deliberately throwing words like that around because they wanted to prove they were true 1337 h4xx0rz.

</millenial-rant>