All good until they come to your house or place of work and tow it away anyway.
In many states, they cannot do this without a judgement in hand from a court of law, unless there has been a payment default for a minimum of at least 30 days.
I think the issue with this remote immob. crap is they are deactivating cars whose payment is a few days late.
Then Yes... they might try to steal the car in that manner. However, you may keep it in a closed locked garage at home, and at work you may keep your vehicle in a secure area, where there is no access to it.
You might also park in one of the higher floors in a large private parking garage in an area where there is low clearance and no truck access -- back into your space; close enough to the wall that nobody can get behind the vehicle or see the plates.
Cover up all locations where the VIN# or other vehicle id numbers may be displayed visible from outside the vehicle, by laying a map, or some papers over it, so that definitive identification would be impossible without breaking and entering.
Attach an anti-theft wheel clamp to all four tires.
Remove any visible logos or dealership names on the vehicle and repaint the vehicle yourself, without providing information about new color.
Rekey the lock cylinders on all 4 doors with something non-standard, to ensure no master keys will work.