This whole new trend of sites posting "news" from tweets, word of mouth, aim conversations, tumblr questions, 'fans' writing in, etc only annoys the people the 'news' is about because 99% of the time there is absolutely no weight behind what's being posted. Adam jokingly called his bandmate a coward because he was at a wedding instead of playing the show. I imagine most people understood it was a joke, but when its taken out of the context of the show and emailed by someone desperate to get their news posted on Absolutepunk it becomes something completely different and unnecessary.
You also have to understand that Jason did not have the context and inflection of voice to go off of, you can't tell something is a joke without those things. If someone emails him and says that a member of a band was not at a show and another member called him a coward for not being there he has no way of knowing that it was a joke because the person telling him what happened didn't say it was.
As for the annoyance with the trend of how news gets found, I agree with you there but there isn't a whole lot we can do about it. It's all part of trying to be the "first" to break stories and it's not going to go away until the internet disappears.