Looking at my Sonos setup and considering the new non-SonosNet 100 and 300 speakers (applies to the Roam and Move too.) If I added them I’d now have to have both a WiFi channel and a SonosNet channel in my home.
If I had the ability to switch off just the SonosNet function on wired Sonos, but not the whole radio, then my non-wired SonosNet capable speakers would connect to WiFi instead, eliminating the need for the SonosNet channel.
I do have the option to remove the Ethernet from my wired Sonos to disable SonosNet but I’d really prefer to keep them wired for the best possible connection.