I want to complain about the sound quality

Well of course you do. You’ve perhaps grown used to listening to slick commercial radio productions, audiobooks and other professional audio endeavours. What I do is very cheap, very fast and still an incredible amount of work each week. I’d love to record each interview in a professional studio each week, but by and large, I record these over Skype or FaceTime. I don’t get any control over the quality of the connection, the guest’s audio equipment or any other unforeseen technical challenges. So if you don’t like it, don’t listen. If you really want to help improve it, pledge to the Patreon campaign which will help buy better equipment, allow me to travel to do them in person and generally make the production of the show easier.