Why not? It’s just a moronic football game and maybe it’ll teach them consequences.

They might have been forced to forfeit the game for having too few players. There isn't a game to watch if nobody is playing.

Schools usually punish the person who gets bullied while protecting the bully so of course they don't know how to handle this.

Probably out of some sense of getting the rest of the school to learn a lesson, and creating anger at the racists. Probably misguided.

Because being teenagers is serious business.