The alternative would be to ask both sides of the bets to record a video, and tell them to only post winning bids, but to pay out to both sides. Is that really better? Classic tactic by the bet picking gambler gurus and is impossible to confirm.
I guess Polymarket too will learn to be more subtle now.
There's no "both sides" of the bets in this case. All the bets researched by the WSJ were fake, none of those bets was ever placed.