Let's insult the sports then.
Climbing, for an "action sport", is actually quite boring with lots of waiting around for people to take one more step.
I like baseball but, without most of the best 1000 players being there, it's a bit like watching the football World Cup without all the players who play for clubs in Europe or South America competing.
Karate is like Judo or Taekwondo only much less interesting and the Kata event looks like drunk dancing.
Haven't seen enough surfing to have an opinion.
That leaves softball and skateboarding and softball has only a couple of competitive teams.
That means skateboarding is the only one left...