I agree the NULL may be a little useless and does get rather in the way in my opinion but I don't see his script as looking horribly structured o_o
He likes to space his stuff out alot... So?
Personnaly, when I get into immensly long scripts, styling is important yes but any script style (as long as it is still organized and consistant) mean nothing as the script just a big haze
(Have to remember where certain functions are defined in the script and such)