What reason does gerry give when he tells Julius that he honestly thinks Julius is nothing nothing but a pure waste of god given talent?

In the movie "Remember the Titans," Gerry Bertier tells Julius Campbell that he honestly thinks Julius is "nothings, nothing but a waste of god-given talent" because Gerry is frustrated with Julius' attitude and behavior. Gerry believes that Julius is not fully utilizing his abilities and potential on the football team. This exchange reflects the tension and conflict between the two characters at that point in the story.