I'd say it's more a case of being tired of repeatedly seeing the same questions, not answering them. He's making a valid point though.
Far too many instances of people being too lazy to take a couple more minutes to search for what they're asking, and that's an epidemic across many different threads too.
That bloats the thread with, objectively, pointless drivel that all too often buries useful information contained in the thread.
Hell, for every 4 or 5 people that do that, there's almost as many that ask about something that's on the first post itself!
Also, he's not the dumbass, they are. Ironically, so are you, because you're incorrectly using the term.