But if you want a sport how about golf, how many PGA tournaments has Butch Harmon won? The argument that someone cant be a good coach, teacher, reff, etc just because they have never played at the level they are involved in is ludicrous.
How many D1 football games have you played in or coached? By your own "standard" you have no business making a judgement.
Don Haskins was a high school girls coach. That turned out pretty well. And there are 100s of other cases that completely contradict your hypotheses.
I am not even defending Howell as a good or bad coach here. I am just saying that your reasoning is ridiculous.