You can seriously doubt whatever you want to, the fact is a lot instructors display the attitude they are God's gift to R/C and that the student is in some sort of boot camp and the instructor is a DI. I'm not saying people don't learn important thnigs like safety, yada yada yada,.... Some just need to remember what the student wants/needs
In the time I've been involved I haven't seen this type of instructor (although I'm sure they exist).
I HAVE seen a lot of students who are extremely impatient, think they know it all, and believe that flying RC is a series of barely controlled, full throttle passes across the sky with violent snaps and rolls thrown in to prevent boredom. They're also the ones who most often lose control for a moment and sweep in towards the pits, only to pull out at the last moment, then never apologize for making everyone scramble to avoid being hit.
I would rather keep a student on the box for an extra 3 or 4 sessions and know he can adequately control the plane, than to let him move on before he's ready. I've seen those results too often thank you.
Peace,
Dennis-