That's a pretty good idea.
What is Amber?
Have you ever heard of TailsOS?
As for the steep learning curve, I don't really see it as an insurpassible problem, because I think that when the incentive is there (oppression), what you invariably find across history, is that peope can learn an awful lot in a very short space of time.
Take a look at Myanmar, they are overthrowing the government with 3D printed weapons and homemade drones.