Jake, I don’t think it’s particularly scary.
We have been becoming more and more visible via electronic mechanisms over the years, and eventually we will have to learn to live with this. Tin foil hats probably won’t help. So it’s futile to knee jerk against this kind of usage of WiFi, because it’s coming. Writing laws prohibiting things don’t actually prevent them happening.
Our society will change and adopt these surveillance systems as being the norm. Change is often uncomfortable for individuals, but it is pretty inexorable and we can’t do a King Canute and stop the tide.