Use it if you want, it's garbage and expensive. If you want to trust a centralized coordinator without knowing the code it's running, I'd rather use WabiSabi, which doesn't charge fees for mixing. That's why it currently has the highest CoinJoin volume in history. Whirlpool has always been flawed: - Labeling attacks - Poorly constructed Tor circuits The coordinator could link inputs and outputs. For everything else, JoinMarket and JoinStr.