Richard,
If I wanted to continue to bicker and be petty on this, I could say yes as a child gets older they do progress to the next level and that is normally a progression from grade school events to high school events. By the way I did want bigger mats for him last year as a 10 year old too. Really it is not all 100% self serving either. My son is almost out of youth. He is going to be a 7th grader next year, so it sure would be a lot easier for me just to accept this and grin and bear it. I really would like to see the sport grow though and I do not think these long tournaments help the sport grow in participation or popularity.
I know I've more than had my say on this issue, so I should just stop posting on the topic because I'm pretty convinced that it is not changing anyway.
In closing I agree with you, "Go Jayhawks".