I think it's pretty safe to say that just about every high school team in the nation has at least one parent that would love to anonymously rail against their coach. And while they can argue about coaching style, X's and O's, temperament or any other topic, it usually boils down to one thing. Playing time. And when their child doesn't get much, we here about the weather, playing conditions, lack of developing players or any other nonsense a parent can come up with. Like I always say, grab a whistle and throw your hat in the ring. Then we would see just how many anonymous comments people make about you.
Not always true, some complain because the team doesn't get better and their kid starts it is a team sport you know. Or are only as strong as your weakest link.