Between this and crypto cryptocurrencies (which obviously can be used to make bets) I don’t know which is more destructive to society
How is it even remotely as destructive as casinos, where the odds are always against you? From a probability perspective Polymarket is much more fair, as you actually have positive expected value if you have an information advantage.
Also, in roulette there's nowhere to put your money on whether a countries leader will be dead by the end of the month