Taking a look of the recent Nintendo games launched, the article loses any sense it could have. Pikmin 3, Wonderful 101, Wii Fit U, Wii Party U, Mario & Sonic at the 2014 Winter Olympic Games. They clearly were aiming to boost console sales with this lineup. But so far the strategy is not working and they are relying on Super Mario 3d World to help sell consoles.
So where´s exactely the "nintendo obsession with finding 1 game blah blah blah blah" , if they did launched several games ? That´s not their ordinary strategy, but it´s the only one they have right now.