At least the girls who are chanting are paying attention to the game. DD 3 complained once that the girls on her rec ball team were on their smart phones in the dugout instead of paying attention to the game. Her TB coach has banned smart phones during games.
They can't have those anyway, by the rules. They should be put away and not brought out while the game is in progress.
At least the girls who are chanting are paying attention to the game.