WWW,
I've heard this argument from you before, so let me spell it out for you. I'm not talking about being a good FI, I'm talking about NOT being an obnoxious bullying total bastard who does more harm than good. OK? You get the point?
I would have learned to fly more quickly if someone had said: "This is an aeroplane, this is roughly how it flies, now I'll sit here and make sure you don't kill us while you work it all out for yourself".
Incidentally, I don't think this chap ever did get an airline job. I wonder why.