Maybe they're just tired of it. I'm personally a little sick of how every single article I post on willpower or procrastination to Reddit or HN or anywhere else will attract the same damn joke. Like, do you really think anyone hasn't seen that before? Or that everyone doesn't think of it in the first second? (By this point, I've come to see it not as a genuine attempt at humor, but basically like posting 'First!' or pissing on a wall - it's just doing something to mark your existence.)