Electronic Entertainment Expo (E3) - Can you tell I'm p----- off about all the whining?

Pretty much. A good portion of the internet doesn't really seem to know the difference between "constructive criticism" and "bitching and moaning."

Constructive criticism about Nintendo's E3 this year: "Well okay you got off to a good start but the second half was really lacking, it focused too much on games we've known about for a long while, and those dev stories really dragged on longer than they should have. You guys really needed something more substantial to pad out the final half of your E3 Direct, because I just came away feeling underwhelmed by it. Not bad, but still needs major improvements for next year. You guys did great last year, so take some notes from that for next time, and hopefully maybe the next non-E3 Direct will make up for how this E3 Direct went. Oh and that 'Metroid' game? Eh… not really what we wanted right now…"

Bitching and moaning: "Fuck you Nintendo, this was the worst piece of shit ever, I'm never buying anything from you ever again! I'm selling my fucking Wii U and buying an Xbox One/PS4 purely out of spite, nothing you ever do from now on will please me at all and frankly I wonder how the fuck I was ever pleased by anything form you guys in the first place because this E3 was worse than murdering my entire family right in front of me! [starts completely needless petition to get a game cancelled because if I don't like it then no one else should and fuck you if you think otherwise]"

Meanwhile at Nintendo’s YT Channel

I checked that trailers for Animal Crossing: amiibo festival, Triforce Heroes and even the Digital Event were witness this above.