That's an interesting angle to take, but I think more likely what I said, then catpix said again is potentially more likely. Betrayal. Nintendo is very careful not to outright screw their base. When the 3DS was overpriced to start for more people than not, some like me did buy it anyway thinking it was fair, and in turn ended up with 20 Ambassador games of which the 10 GBA titles still are exclusively set. Given they would have probably charged $8-10 on each GBA game and the other 10 NES games are $5, it was a pretty good handout for an apology.
I still think you do have a point on milking battery over brightness, but likely making people be forced to buy 2 units so quickly or to choose black and white with timex indiglo tech *OR* a color screen with exclusives that run on a higher spec made for a bad situation.