Earlier quoted context omitted.
Well, having your curtains open also broadcasts an image of your living room on EM spectrum for hundreds of meters for anyone with optics... Same for eavesdropping (laser mic). Easy to listen maybe but you will still get convicted in both cases.
The difference being that having a Wi-Fi router means actively powering a device that sends a signal beyond the perimeter and privacy of your home. A signal that, as evidenced by this app, can be passively [1] picked up and processed by any casual passer-by. Having a Wi-Fi router with an SSID is the equivalent of installing a speaker on the top of your house and have it constantly spell a uniquish name to the neighbo…
Just like you can argue that the main purpose of windows is not so that people can look in, it's so that people can look out, and light comes in.
I agree partially with what you're saying, but there is a mismatch between user expectation and what the technology actually does. I don't think the fact that the user used it implies they consented to the technical side effects.