Because it can be trivially duplicated, this is minimally capable engineering. Yet automakers everywhere lack even this level of competence. By reasonable measure, they are poor at their job.
> Every control in the car is visible
No. And that would be horrible.
Every control _critically needed while driving_ is visible and accessible. Controls that matter less can be smaller and more convoluted, or straight hidden.
The levers to adjust seat high and positions are hidden while still accessible. The latch to open the car good can (should ?) be less accessible and can be harder to find.
There are a myriad of subtle and opinionated choices to make the interface efficient. There's nothing trivial or really "simple" about that design process, and IMHO brushing over that is part of what leads us to the current situation where car makers just ignore these considerations.
They want to go to war with a simple design? Sure, they get a Lee-Enfield bolt action rifle. They fight against people with EF88 Austeyr.
They will die and lose the war.
Longer range, higher rate of fire, lighter, grenade launcher mount, scopes, more accurate, higher lethality, etc, etc.
Simple design so it doesnt't jam doesn't mean you've maximised all the other areas that are important for winning a war.