Southwest has been popular but I think he was not talking about anything a customer would see, he was talking either employee treatment or safety. My wife didn’t like them because of the seating thing. They got a 4 star rating below.
Here are the 2021 airline ratings. It would be easier if they just told us who sucks:
https://apex.aero/awards/official-airline-ratings/2021-official-airline-ratings-recipients/
Alaska Airlines is apparently awesome. Also, there more active licensed pilots in Alaska than in any other state.
Alaska is based in Seattle.