pixpot Are there security focused launcher that allow you to disable apps and settings and not allowing the user to install the laucher och change its settings without a arbitrary password that we can set?
There are some launchers that can do everything you want within the launcher itself (lock/hide apps, password protection etc.), but I'm not aware of any launcher that can circumvent the system wide controls and pulldown shortcuts for settings. They probably need privileged access which no launcher should have... That's where the "education" would kick in. Like "we can only guarantee you safety and privacy if you never press that button, and here's why".
I lack the knowledge to answer the other questions (hardware removal, ease of forking GOS).
pixpot If you think it more productive to discuss this somewhere else, please point me in the right direction.
I think it was great that you came here first as there were a lot of things to clarify from your introductional statement and also some very important misconceptions that indeed would have wasted time from the lead devs and also made you look unprepared.
Your enthusiasm shows, and that's one of the most important factors for longevity and sustainability of your project. Once you can present your mission, goals and requirements in a few sentences, that's when you want to head to the leaders. I wish you the best of luck, you seem to have good intentions and I would love to see more choices out there for security and privacy use cases, even if GOS is the best solution for myself.