Alright, are you suggesting that if I were composing for the organ, then I wouldn't have firstly to accept that there are principles behind how to do it, and secondly have to apply them? Or do you think that literally anything goes there, too?
Or what about advanced organ-playing, involving detailed interpretation of musical convention, as opposed to basic organ playing? Don't you think organists need principles to apply in order to interpret the music they are playing rightly?
EDIT: But, ultimately, the main proof that there are principles to NESing is that NESers generally accept various principles. That is, we try to act IC, to send coherent orders, to follow the rules, adhere to various conventions and practices that we have already seen discussed in this thread, and various other things. If you don't accept that these principles even exist, and if you don't try to follow them, you're just not playing the same game as everyone else... and you're almost bound to make a horrific mess and annoy everyone.