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Worth noting that this is basically only able to tell if a human is in your house by absorbing WiFi.
This also only seems to work on a big company's equipment. Verizon equipment in your house can do this. Buy your own equipment and this isn't a problem.
... "Wifi" is radio waves. Tech used in detecting and reading radio waves inside structures has been around for generations, not the few years this sensationalized BS implies. "Absorbing wifi" is misleading in its imprecision as it is the distortion (and movement of such) that reveals said building's contents.
To be clear, US fire departments have been using similar to locate survivors/firefighters lost in obscuring smoke and behind/under structural obstacles for years now.
This is nowhere near new tech. The lack of comprehension by the gen pop makes this seem novel, but it's old news and shouldn't be used to frighten the masses further into psychosis, thanks.
Big Brother is watching, but this isn't how.
Your car tracks everywhere you go. Your phone tracks you, and many of the apps you install do too. Your phone calls are listened to. Your texts and DMs are monitored. Your cloud storage is tracked. Personal data, even data stored online by private organizations or your own government can be handed over to the US government (Microsoft recently admitted this).
Let's get realistic. Yes, your privacy is under attack, but it's not through your wifi. Those other methods are far worse.