I understand where your coming from... but at the same time going off on all this in a
thread none of your points apply to, does make it seem your anti - this person using a mech.
That said, these things can be learned. I'm NOT mechanically inclined.
The first time my car broke down and I couldn't afford a mechanic, I had to figure out what part might be broken,
buy that part from the parts store and then use the new part to even find the part on my car to remove it and replace it.
It took me 5 hours to replace that part, and it was a starter... lol. All the guys in the neighborhood got out lawn chairs and the beer cooler and WATCHED me fix my car from the house across the street as if I was the television show of the day... I guess my attempt was comedic or something..
While successful, I was a bumbling idiot through it all. I am decidedly not mechanical.
ALSO, I didn't go into any of the STEM fields for good reason.. me, I'm all logic all the time and poor in the math and sciences..
Yet even I can learn all that is required to learn to operate a mech as safely as possible.
You cannot just blanket judge people, even people who are not normally mechanically inclined can manage to learn.