Affiliate Marketing Secrets

I recently ran across this article: http://www.time.com/time/world/article/0…
It states Krav Maga is this huge fad, something I have heard for years from other martial artists. The article goes on to state it is offered in many mainstream gyms citing David Barton’s network of gyms. Yet I cannot seem to find 1 mainstream fitness gym in my area that offers it, yet most offer a boxing class that ‘fundamentally sound and realistic'(their words not mine). Even when researching David Bartons gyms it seems only his Miami location offers Krav, though all offer a boxing class similar to whats described above.
I did some Google Trends searches. In one it is absolutely eclipsed by the more traditional martial art of Karate, traditional fitness routine of Yoga, and even the legitimate flash in the pan fitness fad Zumba: http://www.google.com/trends?q=Krav+Maga…
Even when I researched it against other currently popular martial arts it doesn’t show any real difference in popularity compared with Jiu-Jitsu, Muay Thai, or Tae Kwon Do : http://www.google.com/trends?q=Krav+Maga…
So how popular is it really outside of the martial arts community? I don’t see it really having the mainstream appeal everyone is claiming it has. Is it’s popularity just Hollywood smoke in mirrors and an over statement by our niche community, or am I just missing something?