Speaking from personal experience, I can assure you, there is a surprising number of pilots I see in the sim that have no business in an aeroplane. Never mind a jet. But they somehow managed to get a flying job. I have to say, no one has a monopoly on intelligence or ability. Private, Civilian or Military.
Personal preference will always be, exactly that.
And, any sim instructor with decent experience and ability should be a gem for any flight operation.
I've heard it said many times in my career, 'those who can, fly. those who can't, instruct.' Nothing could be more idiotic, insulting or further from the truth. Unfortunately, some have that opinion. Some even believe it to be true and that's an even greater insult.
Good instructors rarely get cut loose to fly because they're too good at what they do. How can that be bad for anyone?
Willie