Think about it this way: someone who wants to coinjoin to maintain a good level of privacy against friends, co-workers, customers paying them in BTC, or any other reason where the privacy you know isn't the center of it. To that someone, using Wasabi is probably a better option. They could think that since this service goes through a government filter, what comes out of it is going to be "clean" coins, making them safe for future cash-out.