I don't think it's even the kids anymore tbh. The show is too long for them - the kids who follow WWE will do so via their iPads/short online video clips. I know that's how my nephew and his friends followed it a few years ago.This exemplifies what I’ve been saying for awhile. Whatever leftover fans WWE has left doesn’t watch pro sports. They’ve lost the frat boy and athlete types and I think all that is left is kids, parents, and Comic-con types.
It's Comic Con types, parents who have remained fans since childhood, and parents who are Comic Con types! I agree, these are less likely to watch pro sports.
WWE and pro wrestling is very much on the lower end of a entertainment subculture thing thesedays, similar to: Warsies, Trekkies, horror franchise lovers, Anime fans, hardcore gamers etc.