I think Nintendo's great and I have no problem with what they do. Thing is, they might eventually be forced by the market to purely become a gaming publisher. I think people who love Nintendo criticize just as much - they hate to see what they perceive as Nintendo willingly taking third place in the next-gen market. They also heavily criticized the loose licensing that diluted the Wii product. These critiques certainly aren't unfair.
Nintendo's always done it differently, almost without regard for the competition, trusting that people will come for the games. The Wii U looks to be shaping up a little better and will be the cheapest option come Christmas and looks like it will have a more solid first-party library. It may just leap back in the forefront. We'll see.