According to that Wikipedia article, after he climbed Everest he (of course) got a book deal, touting his achievement. Why am I not surprised?
I still think this whole adventure was a very bad idea for a child that age. If he had "a dream" that really meant that much to him, he could easily have waited a few more years to accomplish it. The only difference about being the youngest-ever blah blah blah is you might be listed in the Guiness Book of World Records, which is a very immature ambition in itself.