It's interesting because I am not against kids competing in MMA as much as I am against them competing in Muay Thai or Boxing. I think MMA has the potential to be much safer as it is with adults fighting than stand-up only ring sports.
Hey all-
Like Ryan, I think I'd be more worried about kids boxing than doing MMA. I didn't get a chance to watch the original video but I did a search on YouTube for more and alot of the videos I found of similar stuff involved a limited amount of effective striking and was much more clinch and takedown orientated.
Here in Ireland there is a successful 'MMA league' for people who want to try MMA but not jump into pro-rules. For these bouts no headshots are allowed, and this format has been quite succesful. The kids matches here I have seen at shows have used this rule format, although the kids participating were all in their mid teens, and in skill terms they were already seasoned grapplers. Maybe this would be a good compromise and avoid some of the visceral reaction people who are outside of the sports might have to this kind of thing.
The issue of what consititutes exploitation of kids who are willing to fight at adult shows is a trickier issue that I don't feel qualified to answer. It would seem to be part of a broader debate about at what age kids would be allowed to test themselves in tough sports, it would have implications for other pursuits not just MMA.