So why did he buy them in the first place?
"I'm probably going back to a traditional setup with buttons, stereo speakers, and wires. The sound was better, control better, and it still works after 20 years,"
Totally agree, so I wonder why he bought it!
Sonos, like most other boutique branded mini-hi-fi gear, has always been more about the 'cache' [insert accented 'e' if you know how!] (otherwise known as 'w' waving) than the quality.