I'm new to Manifold and it's interesting to see so many duplicate questions with multiple questions asking the same or similar thing. At the same time, the variety and depth of the questions are rather underwhelming given the size of the user base and the accessibility of not using real money.

What are the reasons for this?

Is it duplication for market arbitrage? Incentives created by question creation cost and the free questions for new users? Too much effort and too little payoff for asking good questions and managing the topic? Targeting hot-button topics rather than interesting and unique issues for traffic? People are really dumb and unoriginal, and Manifolders only modestly less so?

This is a serious question and not asked to insult. A response will be rated higher if it has the qualities of being analytical, comprehensive, and succinct. You are free to use, refute, or ignore my own speculations above. Sorry small bounty because I'm new and mana-constrained.