It is the essential problem. That's why I have such hope for this place: can the trap be avoided if there is no moderation, but everyone is given the tools to shape their own experience - seamlessly, individually, with no overarching "moderator" position belonging to anyone? It's still really small. It may never be big. But it functions without moderators. I think Alexis and Steve had a different architecture in mind when they created Reddit. I think they figured people would eventually silo into their own subreddits and interact only with the people they had affinity for. But then, I think they had no understanding of human behavior and less interest in learning and when it became obvious that people will consume at 10x the rate they create and that anger is a far better motivator than joy, they just skated along and counted their money.