I can't be bothered to broken record it but I will instead posit what if they had spent the time on AR card battles refining the controls into something that was not a handkiller?
Can you think of a better control scheme? There's literally no other sensible way they could have done the controls with the hardware they had to work with. They offer touch screen and button aiming. Even if they offered dual analog aiming with the circle pad pro, they still would have beenlimited to the aforementioned control schemes for use without the circle pad pro.
But that's off topic. Also, that game was in development MUCH longer than the typical handheld game... I highly doubt the AR feature detracted much at all from time spent developing the game.
You can't improve how stupid people tend to be when it comes to adapting and holding their systems correctly, you know supporting the weight of the system with your right hand fingers instead of curling them in causing your hand to cramp.
I think he actually has a point about the control scheme being a pain (a large amount of it depends on the size and shape of your hands, not just how you hold it). But the point is, there's literally nothing they could have done to avoid this with the hardware they had to work with.
In other words, it's neither the fault of the game developer or the players: It's Nintendo's fault for making such a hardware design flaw that requires games to make such compromises as Uprising's controls.
