You'd have to be spectacularly stupid to bet on these kinds of things without having insider knowledge, because you ought to know good and damn well by now that the people with insider knowledge are DEFINITELY betting on them.
couldn't you somehow in theory track the order book to if and when insiders are betting and then copy the trade?
https://x.com/peterjliu/status/2024901585806225723
But there is still the problem of knowing which new trades the insiders made before the bet is settled (maybe solved by being an insider of the prediction market), and also since prediction markets need money on both sides (you are betting against other people, not the 'house') when the insiders make their buy they probably eat up most of or all of the action on the other side.