I understand your point, robot operated manual gearboxes aren't very realistic, but when we drive a car in LFS it is meant to be identical to every other example of the same model on the grid. Well at least that's what I've always hoped was the philosophy, but of course we have the RHD/LHD thing which sort of shoots that down.
Anyway, that's why auto-gears is a driver aid, rather than auto-box being in there as a mechanical modification..........I think.