Why are people against Cesar millan?

I believe that he has a way with dogs, most definitely, and I wholeheartedly agree that all dogs need plenty of exercise and firm leadership in order to be "good dogs." But lots of his methods I am not so keen on, mainly because many of them involve using force and physically restraining the disobedient dog until it "submits." For one, I think that can actually be detrimental to training for dogs with weak temperaments, because it crushes any confidence they may have had. In cases of dogs that are more aggressive and "dominant" personalities, such methods can go the other way and actually be dangerous, for example if the dog decides to turn around and bite the handler. (Cesar has been bitten MANY times on his show.) It's not the kind of training/handling that people should watch on his show and then try with their own dogs.