Comcast renting out wifi hardware to all of their customers, and already bringing that technology to the masses should be concerning to you then.

Sensing is (sadly) already part of Wi-Fi 7. If you have a recent Intel, AMD or Qualcomm device from the past few years, it's likely physically capable of detecting human presence and/or activity (e.g. breathing rate, keystrokes, hand gestures). It can also be done with $20 ESP32 devices + OSS firmware. The open questions are on custody and legal usage of CSI measurements, not their existence.

But think of how much money they can make by selling your health data to insurance companies!

Yet another tool for our surveillance capitalism overlords to figure out when people are having sex.