He was being sarcastic. His point was that people should stop being so narrow-minded as to exactly what they expect to see on HN and get away from the sometimes

He was being sarcastic. His point was that people should stop being so narrow-minded as to exactly what they expect to see on HN and get away from the sometimes formulaic waves of articles about whatever the buzzword of the day is. Rather than backseat moderating against topics people think are uninteresting, they should just focus on submitting good quality, interesting articles about whatever could pique the curiosity of the readership.