This is common in not only the MMO industry, but the gaming industry in general. Since the internet, each year it has been easier and easier to voice an opinion in, and it can be a good thing, or bad. You will always get the person who has such negative feelings towards something wanting the most amount of attention. He will throw red flags, he will put up flair, he will say words that will easily rile someone up to get his message across.

I wouldn't concern about people's reactions towards 2.0. I think it just looks more extreme due to the previous game not being a success, just giving people more to work with when being critical towards SE. I would just simply ignore them unless their complaint or criticism towards the game is legit. People nowadays like to complain about the silliest things (Like grass and back peddling.). I doubt SE takes them seriously and you shouldn't either.

Half the time, the person complaining doesn't know what he is talking about and just wants to rant just to rant.

When you complain or give criticism, please make it in the benefit of the core mechanics of the game improving, not simple knit picks like grass or jumping. The game you want won't be done 100% through your vision. There will be things you like, and some you don't. Please comment towards things that will help the game experience, not be turned around by simple personal taste.

Watch how far this post will go, feel like I am playing QWOP.