When I tell Google assistant 'lights out' either on a google home or on my phone I get the response "ok turning off 15 lights" and every light in my house turns off.
When I give this same command to any one of my 9 sonos ones I get "ok. Turning off the kitchen light" or "ok turning off the livingroom lights" etc. It only turns off the lights in the same room as the sonos one to which I am speaking.. It's completely useless. If I'm going to go room to room telling Google assistant to turn off lights before I leave the house I may as well just use the switches..