75% dont hate Nintendo, in fact, Nintendo likely has the largest fan base here. It's just that to super hard core nintendo fanboys, any criticism is seen as hate.
If Nintendo announced the use of friend codes on the WiiU and someone made a thread about it. To these guys 90% of the thread would be "Nintendo haters".
That's true about any of the big three, or at least it used to be. Most people just don't give a shit about MS anymore because how much they've shown they don't give a shit about core gamers, and Sony lost a lot of people who were hardcore fans with all the rocky stuff that the PS3 went through, but you see, and this is coming from someone who never bought a Wii, DS, or 3DS, Nintendo is gaming to a lot of people, even to core gamers that know there's more out there. Nintendo is that name that has always been there, at least since things really started to pick up for gaming, and it's just a very reliable, solid company. I'm sure they lost fans with the Wii, but they still are Nintendo at the end of the day.
With that being said, I think people really need to understand that criticizing something is fine, as long as the concerns or criticisms are valid. No company should be bullet-proof, or infallible, not even Nintendo. Same goes for Apple fans, because a lot of them are the same way. Everything could be better in some way, and a lot of time, shit just isn't right.