sounds interesting actually.
personally my view on the subject of wrestling/grappling as a sexual fetish is a bit ambivalent.
I'm gay and I practice judo. However, judo came long before I was even sexually aware, so for me there's nothing sexual about my sport.
if someone would take up wrestling/judo et.c. to get off on it sexually, I'd find that a bit creepy actually. unless it was a conscentual act in a club for just that purpose. in that case it'd be fine. it just hasn't got anything to do with sports, it's a fetish.
You should watch the documentary, it dispells the word "fetish" and not everyone is getting off to it, and if they do they would be doing it privately and certainly not during a public competition or class. All of the people in the film wrestle competitively, but were open to talk about other issues.
You'd be surprised at what I went through to get a BJJ school to just talk about BJJ. The BJJ community is an EXTREMELY homophobic community, and I was bashed in the making of the film. I also interviewed other gay men who took BJJ seriously, were award-winning competitors, and were bashed just because people found out they were gay. They did nothing inappropriate in class.
I really suggest you watch the film.