It's the truth. Halfpipe tricks look way better boosting high above the lip. I don't skateboard, but snowboarded for a bit. Went to the US Open back in like '98, and honestly, a simple method or mctwist 5-10ft over your head will look so much better than a 720 at half the height. The crowd pops bigger for the high tricks more technical ones. OTOH, you had someone like Michalchuk who'd pull double-backflips that were both high and technical. So it's possible to do both.
I think what made Tony's 900 as epic as it was is that it was not only technical, but he got up on it too. This kid if young, so his body isn't matured yet. If he can stick with it, and not wreck himself, he'll be able to stick that trick while elevating high above the pipe.