But learning to drive with a manual transmission only takes a day. I suspect
that learning to move a gear lever or a flaps lever is comparable.

Do you drive MX???????? - or is this another fantasy

If so you should be aware that there is more to learning to drive than
just moving a stick and rotating that round thing in front of you.
There are rules to be learnt (well outside France), you have to learn
how to handle the car, your perception to the outside world in
relation to your speed, position etc on the road. When to speed up,
slow down. How to handle emergencies. Same goes for an aircraft.

Ibby