找到了英文来源，貌似是被曲解了。原话：
Games That Require 3-D
At last year’s E3 Expo, Nintendo showed off a massive array of software demos for 3DS. While most of them will be available soon, one of the most interesting ones seems to have been shelved entirely.
The demo showed a Mario-style jumping game with transparent platforms. In the system’s 2-D mode, it was virtually impossible to tell where the overlapping platforms were in relationship to each other. With 3-D on, the depth effect lets you see where to jump.
“We want to get software out to as many people as possible, and there are some people who just can’t see 3-D,” said Konno when asked about this demo. “We’re moving away from any stance that says if you don’t use the 3-D functionality you can’t play this game.”
不是不做3D。而是不做只有在3D下才能玩的游戏。