Ha. I couldn't disagree with this person more. I am one of those "21 year old" flight instructors. There is nothing more I hate than being seen as incapable of doing my job due only to something as subjective as age. I busted my butt just as much as any other CFI out there. I still went out and received my PPL, IR, CPL and my CFI. The FAA wouldn't have signed me off and given me my certificates if I was found incapable right? Sounds to me like this person is more irritated by the fact that he received some bad instruction so he is pointing the finger at the wrong person. When you point at somebody else you've got to remember that there's three fingers pointing right back at you
