Sonos Radio cannot be removed from the Sonos app.
@snerdly I completely understand, you want to keep it simple and don’t want to be “sold” on a regular basis. I on the other hand am a “paid” subscriber of five different services (most are free because of circumstances). Apple paid as part of Apple One, Amazon for free because of Prime, Calm because I am an educator and I got it for free, SiriusXM for free because I was grandfathered in being one of the original subscribers when it first came out; and then my paid Sonos Radio HD subscription that we listen to 70% of the time at home. That doesn’t even include another dozen free services that I have on my Sonos such as Pandora, LiveXLive, etc.. The reasons why are quite simple for us-variety, flexibility & uniqueness. Their is a big swing between, Yacht Rock on SiriusXM, Cruise Control on Sonos HD Radio, Light Rock on Amazon, Pandora or just having a Jack Johnson/Jimmy Buffet playlist. Technically, you would argue that they are all similar but they have just enough difference to make it fun. I apologize if this comes across as patronizing or in some other way, that is not my intention; my point is just to not just throw it away without giving it a try. You might find something in the free version you like or compliments whatever other service you use.