Have you considered just putting the lights in the same group? If you can make your switches control the group you should be all set.

https://www.home-assistant.io/integrations/group/

You might also be able to link them together on the Z-Wave/Zigbee level, depending on your hardware.

It wants to show you a graph of your air quality.

Pretty sure it’s always been upfront with that it still tracks you? I always thought of it as a “don’t store history and cookies locally” thing and nothing more. Maybe I read that disclaimer with more cynicism than most?