As long as the kid isn't interfering with those around him or messing up our own player, WGAS!! He's not the whistler, he's not annoyingly yelling annoying chants like at girls softball and he's not being vulgar, lewd or indecent, he's simply having fun and capitalizing on the spotlight. If you've ever hunted or played a sport you will realize you can focus on something like a ball, person or gunsight and some how ignore everything else, maybe try focusing on the left handed batter next time he's on the screen.
Next thing people will be complaining because every time the cameras pan the crowd they seem to focus in on the prettiest college student or woman in the row or section. I've been around people who complain about some stupid stuff but this takes the cake!!