If one is tracking me, you’re right, but the probability of that is low.
If one I own is tracking someone else, either they know it, and are OK with it, or they stole my stuff. The probability of this is at least 100x higher.
The vast majority of the market are people like me, and (unless they outlaw fleet management equipment and stolen property trackers) the criminals can and will be able to buy things that are better for stalking.
Edit: By better for stalking, I mean these trackers probably have battery lives measured in months, not years, and probably aren’t rated for being magnetically attached to a wheel well or vehicle undercarriage. I doubt they even have an option for wiring into automotive 12V. On top of that, they’re not going to provide the stalker with high time resolution traces of where they’ve been for the last year.