Why is it always someone else's fault? People need to teach their children to behave and be respectful. For my daughter, the "cheerlebrities" in her life are the senior team at her gym. She follows them around like a lemming sometimes at open gym. I allow it to a degree because they are a fantastic influence (you should see what it does to her tumbling to have 10 12-16yos watching her and going "wow!!" so sweetly) but after a while she gets to be too much and I have to call her off of them. She's a little young to care much about "real" cheerlebrities but I would not allow her to hound those children by following them.
It's not the responsibility of the gym the cheerlebrity is from or their parents, or coaches, or bodyguards, or even the EP, to teach my child what is acceptable behavior, it is mine. If I were a coach and this was a problem in my gym, I would go to the parents first.