I don't see anything in Polymarket's marketing material that suggests it be used for hedging.
They describe it as "profit from your knowledge by betting on future events across various topics" on their own website.
Betfair Exchange can be used to make predictions, too. They call it "implied probability" and it's always been a feature of their product.
My concern is the use of terminology to describe a gambling product as something else entirely.
Is it a prediction market than can be used to gamble?
Or is it a gambling exchange that can be used to make predictions?