This is not true at all. I don't know why you guys are giving devs and publishers a pass here. It's their job to make games we want to play. We are under no obligation to buy their product, therefore their product has to be compelling. Sure, Nintendo has to take some of the blame. However, it's not Nintendo who puts out a bad game. If I make a game today and it's crappy and doesn't sell, should I blame Nintendo for that? Is it their fault that I made a crappy game and couldn't convince people to buy it? No, it isn't. Gamers don't have to buy their stuff and if their games can't click with players, they bomb. Every developer/publisher takes that risk. The final product is theirs, though.
Right now I'm making a game across multiple platforms. Linux, Wii U, PC, and Mac. My main development is on a Mac so that version runs tops on different Mac hardware. I have to spend time getting it to function properly on the other platforms...even using Unity. I try to understand the intricacies related to each platform, but it does require a bit of work to get everything working properly. There are always some niggly little things that pop up and I have to work through those on the target platforms. If I end up releasing a crappy Wii U version, then who gets the blame for that? Nintendo? The player? I decided to work on my game and chose the platforms knowing good and well that there would be challenges. I can either cut my losses and drop a version, own up to the fact that one of them is crappy, or try to make them all the best they can be. I suppose I could blame Nintendo (Sony or Microsoft) for why my game didn't run well on their hardware.
Anyway, I'm being longwinded just to point out that it's not the hardware manufacturers who create these games. Devs, publishers, and hardware manufacturers are all involved. If some third party puts out some shitty game and expects us to buy them, then they're out of their damn mind. We should buy crap just because they did us a "favor" by putting it on a Nintendo platform? That's not how this works.