He's Only there to bother people and keep the league up to date. He's too young to officially be the Champion yet. So he's learning the ropes.
Yes carrots are evil. Them and the monster sweet potatoes, the doom of us all.
He won't hate her once he gets to know her. But he's well aware the prize money he earns is mostly what keeps food on the table at home. So he doesn't like people who he thinks have it easy.