I guess it's easy to say no to all of those except that, if you have a sick child and you have a large house, and you have a baby monitor that would be located far away, and you were in Switzerland you would get a baby monitor that only turned on when you needed it.
Our baby monitors in the U.S. and Canada are programmed to be on 24-7. You could save greenhouses gases if the government, right now, mandated that all Wi-Fi devices could be automatically powered down when they weren't being used. It would not even be that difficult to imagine a way to save greenhouse gases. The Swiss phones, the Swiss so-called cordless phones, don't broadcast 24-7. They're only used when the person needs it. There's a way for software and hardware to be configured to make that happen. No one has ever calculated the energy savings that would result from it, but it would be substantial.