There maybe a correlation between those who like to draw, and can draw well, and those who can't and therefore have difficulty with this game. This might well be an overlooked flaw in the design of the game as all Japanese can draw well, given that the way they write requires much more skill than a simple western alphabet.
For the record, I can draw well, and had no problems learning this game at all. This is the only explanation I can think of as I find some of the comments about the game being hard baffling.
I found each area to be much like a puzzle game, which once solved was easy to get through. I can imagine if you hadn't learned the core move set and were just hammering away through attrition rather than skill then you would get the reactions we're reading.
I can draw... alright soo. Don't think it has anything to do with that. Not like I hold the right stick like a pencil... so no.
Edit: Ah, I suppose you mean physically drawing on the touch pad! Derp. Wasn't comfortable for me.