I currently have the Sonos Arc, Sub gen 3 and two One - Sl connected to my LG C9 and an Apple TV 4K. Sonos Arc connect to my LG C9 via HDMI Ultra High Speed cable to eARC port. Both my LG C9 and Apple TV 4K use LPCM but my Sonos products do not. So, I have continuously have to switch between Atmos and 5.1. Very annoying. Absurd such expensive equitpment such as the Sonos products do not have software to support LPCM.
Second issue is that you cannot switch wifi networks without an ethernet cable. You have to completely reset your system to switch wifi networks if you cannot connect to your router without an ethernet cable.
Third issue is that my Sonos products do not have 5ghz wifi capability. It’s 2020 Sonos.