alt Hacker NewsI think you are underappreciating how "manipulation of poly market odds" can be destructive when you are betting on geopolitics. Here this means that every decision is now a conflict of interest, and that doing the unpredictable (politically, economically etc) has a financial incentive for potential insiders. Sounds pretty dangerous to me.
On the other hand we have had stock markets forever. Sure you couldn't directly bet on e.g. if trump would invade iran, but you could indirectly bet on it by betting on things like the price of oil.
I dont think this is a new threat.