Are you serious? A simple question? That is not only an entirely new thread, but a completely separate bulletin board!
I don't have all the answers - if I did, I would sell them for a gazillion dollars, and then I wouldn't have to worry about any of this. But, I can say some things with confidence - one of which is that the three things I mention above (count it as one or three - your choice) are the wrong ways to coach a child.
Do I know any perfect coaches? Sadly, no. But, the closest I have found yet just happens to also be the winningest soccer coach in this state - ever (is that successful enough for you?). So, there.
Again, I have no idea whether this coach's comments were truly demeaning or not, but I'd be willing to bet money that if he is as good as everyone here says he is, and IF he does demean his players, he could be that much better of coach without demeaning his players.
A coach can get fired-up, pi$$ed off, expect perfection, let players know they aren't playing worth a dang, and a whole host of other items, without demeaning them. Yes, it is possible. Is it easy? Heck no. For some, yes...others, not so much so...and yet others have to work reeeeal hard at it. CHT had a good point...plenty of great coaches have not-so-great moments. And, AK is definitely spot on.
Personally, I don't believe this coach could be as successful as he seems to be if demeaning players was standard practice for him. Neither players nor parents would be willing to put up with it for very long. So maybe he just had a bad day.