I can see this being useful for people to put this on their car if they have concerns about auto theft. Those airtags can make it easier for police to track the car thieves. So I see them as a good thing as far as that.
For those that FEAR being tracked by anyone - anywhere - if you carry a cell phone .............. you're already "trackable." You already carry a pin-point tracking device. If you FEAR being tracked - throw away your cell phone.
^^^^^ I have one - but they can track me if they want. I lead a pretty mundane life. They won't be interested in me for long!!! I'm pretty much drying paint.