Even then we still don’t use the same control scheme as the model T then, the model T had a separate forward and reverse pedal and no clutch.
But fly by wire isn’t a matter of difficulty it’s a matter of redundancy and safety, like I pointed out before, people aren’t going to maintain the system properly and if there isn’t a back up it’s going to lead to accidents.
I thought they’d already banned the military from using this, you’d think secret service would be included in that ban too