WELL SAID, WILLDO!!
I'm a self taught ( out in the boonies) flier/now instructor. I tend to follow the " common sence/fly what ya' brought" type. If a student brings a total piece of crap to the field, we don't say "go home and start again" we say, " get the toolbox out!" and make them right, explaining what and why as we do. Tutor, mentor, instruct. Not "my plane's better than your plane, and so am I, and I've been here longer than you, so now follow MY rules."
I still have my open policy: If you want to learn to fly, and have your own equipment, or are willing to get some after an intro flight or two, I'll teach anyone, at my field, for free. I don't turn anyone away, for any reason if they truly want to learn, and not just be an instant know it all, and cowboy flier.

Jetts