The moment a community loses its sense of humor is the point at which it is little more than someone's hype machine. There has to be something to break the mood every so often or the community will burn itself out! Especially in a high tension environment like the startup world.
In this instance, not covering yet another current event piece like this doesn't constitute a community 'losing its sense of humor'. This story has been here before, and humor has been present since the start of HN. That's not really a concern.