1) Well, it is true that people should have watched the trailers but watch_dogs also had many other issues that couldn't just be found on the trailers... I mean, the dissappointment for watch_dogs began with those trailers but the people that still believed that it would be a zomfg game also experienced issues. For another example, if you bought Watch_Dogs on PC which Ubisoft said that the PC was the lead platform for the game, you would have experienced major lag and a ton of hickups while playing it even on very beastly PCs... And not to mention the whole "the e3 2012 textures were in the gamefiles but they just weren't activiated" nonsense as well... And sure, if you win a lot of awards, you would show them off but if ur game isn't as good as they say it is, then maybe you should be careful with how you present them so they the consumer doesn't get freakishly over hyped

2) And sure, its lazy but lets be honest, these companies have been around for over decades and they should know by now on what gets a consumer excited and what doesn't. We are giving them our hard earned money and all we ask is for them to meet our expectations which they didn't. We trusted them to deliver us a product that meet our standards that are set by them and their "pretty" trailers/marketing. Sure, consumers are lazy but thats cause we are giving them the money and if they dont deliver, then they deserve to be bashed cause its them that set our expectations. Also, the people that complain aren't exactly your casual dad that bought a game for little timmy. The people that complain are generally gamers that most likely saw all the trailers and videos that the developers had and they probably thought it would be great but they were still dissappointed with the end result. And its quite hard for consumers to do research during pre-release cause of the review embargos and usually, the content thats avaliable in pre-release are staged

And skyward sword was dissappointing and it was Nintendo's fault for setting up the hype.. Nintendo claimed that there wouldn't be any issues with the wii motion plus and its montion sensing capabilities but there was and the whole game in general wasn't all that it was cut out to be from the trailers. I bought the game day 1 with the gold wiimote bundle and I was still dissappointed by it cause the moments when my motion control derped, it got me out of the immersion of the game... And not to mention, the game had that save bug where it would corrupt ur save file after u got to a certain point. It got fixed eventually but thats still bad

Edit: And of course people didn't over-hype them... A game becomes over-hyped when the game doesn't meet the standards of the consumers they are trying to please which wasn't the case for Nintendo games

1) Ok. I'll admit that they deserve to be bashed for screwing over PC owners. I hate when developers hold a game back simply because another system / platform can't handle it. That is pretty dirty. As for the Bolded 1, Again, if you wanted to sell something and got a ton of good press claiming it as the next big thing, wouldn't you use it? Who in the right mind would say "Don't listen to the hype, our game isn't all that amazing"? I actually don't think it's being shady. Bungie / Activision probably did believe that they had a great game on their hands, the press helped fuel their idea of that, and they marketed it as such. Nothing at all wrong with that.

2) They do know what gets consumers excited and they have every right to use that to their advantage. Again, it's a business at the end of the day. It's up to the consumer to judge for themselves if it's worth their money or not. It's simply too hard to meet everyone's expectations, I'm sure they tried. They didn't say "Let's make a bad game and then pretend it's great so people will buy it". As for the 2nd bolded, nobody forces anyone to buy the game on day one or preorder. 

Every Zelda gets hyped to the high heavens, Nintendo was bound to fail to meet the ridiculous expectations sometime. Plus, you know as well as I do that Nintendo / Miyamoto actually though that Skyward Sword was gaming gold

This is a good example. Skyward Sword actually met his expectations. You can't make everyone happy. I wasn't hyped at all for Destiny, I bought it anyway & guess what? I'm only at the beginning but so far it's pretty good

1) Of course no one would say, "don't listen to the hype" but its also their job to make sure that the hype doesn't get out of control if they want to put consumers first and money later... Nintendo does this very well with review embargos by giving reviewers up to a month to review the game and taking them out over 2 weeks prior to release... Games like Desinty on the other hand didn't... The review copies of Destiny went out like less than a week before the game launches... Not a month, not two weeks, but less than a week! That gave most reviewers less than 2 days to actually play the game before the release date! On top of that, Destiny developers told people not to trust day 1 reviews... That is pretty shady if you ask me... And if Bungie/Activision really believed that they had a great game, they wouldn't have done any of this

2) And sure they can use the advantage but they also deserve the backlash for doing so if their game is not up to par... Granted it is hard to meet everyone's expectations but just by judging at the amount of complaints from reviewers and consumers, its hard for me to believe they even tried... And sure, no one forces the consumers to pre-order but the companies give people insenstive to pre-order with tons of pre-order bonuses... If a game has a review embargo with staged pre-release content and the game is very hyped and it has a pre-order bonuses, then of course the consumer will pre-order it cause they think they will like the game at the end and getting free stuff on top of that is a great deal in the minds of many...

And I wouldn't doubt it but they should have heard/listened the complaints that people had with motion controls in general but they wanted to release at least one AAA game with full motion control support so it was kinda doomed to be a dissappointment from the very beginning anyway...

Cause of this:
But be certain of this, that in the last days times of trouble will come.
For men will be lovers of self, lovers of money, uplifted in pride, given to bitter words, going against the authority of their fathers, never giving praise, having no religion,
Without natural love, bitter haters, saying evil of others, violent and uncontrolled, hating all good,
False to their friends, acting without thought, lifted up in mind, loving pleasure more than God;
Having a form of religion, but turning their backs on the power of it: go not with these.
For these are they who go secretly into houses, making prisoners of foolish women, weighted down with sin, turned from the way by their evil desires,
Ever learning, and never coming to the knowledge of what is true.

2 Timothy 3:1-7

Because cynics have the most time to make cynic posts on the internet. Happy people usually just play their games.

Human nature only in Cyberspace! xD

As other have said: Hype + Disappointment = distrust/negativity

And then there's Shadow of Mordor, which a lot of people thought, oh another ordinary LOTR game, and Warner Bros, they ruined the Arkham series (debatable). But hey the internet loves it. Of course the cynicism (or anti-hype) pre-launch helped here.

Because some people either refuse or are incapable of growing up. Just take a look at people's reactions in the pixel wars and you will see how small the differences are between a concerned gamer and a spoiled child.