The whole cheesy nature of it. Chicks dig that kind of silly, cheesy stuff. Older folks want cutesy little fun videos without all the testosterone-driven guitar stuff that guys typically like. Plus there's no guy-centric "Eric Martin-esque destruction of the opponent" stuff that we typically go for, it's all cute cheerleaders and squeaky-clean students being all genial and happy-go-lucky.
For what it is, this video is OK. It's not my taste, but then I'm more into the "Eric Martin-esque destruction of the opponent" stuff.
I see what you're saying now. FWIW, my mom hated it.