I believe his complaint is with specific nerdfighters who constantly brag about how awesome they are all the time. Sometimes people who fight to decrease world suck become smug little douches about it, and sometimes when people are part of a community like this they become smug little douches without doing anything. (You could say they are really happy with themselves)
On a side note, awesome really loses all meaning when you overuse and abuse it. Nerdfighters should learn other words for something they like. You can't fight for awesome if it doesn't mean anything.
Try watching a vlogbrothers video sometime. You'll see it's not just blabbering about awesomeness. They talk about real issues in the world and put on Project for Awesome every year, raising thousands and thousands of dollars for a variety of different charities. If that's not decreasing world suck, I don't know what is.