Yes, people with knowledge of the topic can make money from that if the prediction market trends towards the wrong answer. But that is not how those prediction

Yes, people with knowledge of the topic can make money from that if the prediction market trends towards the wrong answer. But that is not how those prediction markets are used. You see arguments like "the prediction markets give only 20% for this to be true" and people take that as "it is untrue". Without any qualifier (it also doesn't help that most people don't understand statistics).