First, at my BJJ school, the subject of XMA has never come up. I can honestly say that I have no idea what my buddies think of XMA.
As you say, you see XMA and see the kids as something to make fun of. I see the kids doing XMA and here's what I see. I see kids who are in good shape, who are athletic and agile. You can't be good at XMA while sitting on the couch playing Halo 3 all day long. I also see kids who have clearly put many hours into learning how to do something well, indicating to me that they are learning a solid work ethic. I've never seen anyone older than maybe their early 20's doing XMA, so when I think of it, I see it as a youth activity, and I can't think of one bad thing about it. I could give a rat's *** if they practice "aliveness" (although in the context of their sport, they do) or if it's an effective martial art.
Here's the bottom line, and why I think that maybe you aren't the Coach of the Year you believe yourself to be. I see the positive traits that the kids learn, as I said early in the thread. Whether they're on the chess team, the debate team, the wrestling team, doing XMA or BJJ or whatever, if they're learning positive life skills and lessons, I'm 100% for it. Sportsmanship, how to lose and how to win, a strong work ethic, the ability to set short and long term goals... all of these things are independent of the specific activity. It really doesn't matter if these skills are learned playing golf, playing the trumpet, jumping around with a bo staff or competing on the mats at a sub wrestling tournament. What matters is that they're learned.
So, if it sounds like I'm defending XMA, please don't misunderstand. We could be having this same conversation about any number of youth activities. I'm simply able to look at the activity as a positive one for kids. And I'm, quite frankly, concerned that you say you're a coach, but don't see it that way and are instead threatened by it.
Finally, you haven't offended me in any way. As you say, you don't know me and I don't know you. I'm responding only to what you've written and how you've written it. You keep trying to personalize these things by suggesting that I'm offended or taking things personally. I hope it's clear that I'm really just trying to be clear.