I think you're right that they are incompetent. The point is not to make them understand it, but rather to make them see that enough people care. The problem is that most people don't write, so the politicians don't see that they care. Same thing for companies. How many GrapheneOS users say "well when it stops working, I just move to another service, and if there is none, then I live without the service entirely". That way the companies never see that there is a need.