It's a **** mound as are the others. If you don't understand why, that's a you problem. Opposing teams don't "fix" the mound down that far because most pitchers don't land where he does. So they ignore it. It's gamesmanship for sure, but if he ends up getting hurt because of it, how will those teams feel? I'd feel like **** no matter who the pitcher was if I could have tried to do something to prevent it, and willfully didn't. Does he have that problem at home? If the answer is no(and it is), then I think you answered your own question.