^You’re right. To the extent that there are some laws on the books requiring removing the stinger when not towing.
But it’s about as unenforced and frivolous of a policy as they get.
Furthermore, I don’t actually care about making the roads a safer place for the person that rear ends me. No retribution for making my life more difficult and costly due to someone else’s inattention if I could have prevented damage to my vehicle.
However fender benders which the stinger protects the vehicle from some body or bumper damage are not sacrificing anyone’s “safety.” And if it’s a forceful enough collision to get past the stinger and into the vehicle body, it’s a moot point by then for the vehicle in back, although it will still help minimize body damage to mine.
Once it’s bad enough that the rear ender is literally eating a trailer hitch and the rear ended vehicle gets the frame rails curled, it’s also a moot point as their engine is also probably in their lap. Unless they’re driving a Tesla! Lol
Heck I could make a case that it’s actually safer in big tall trucks. Keeps the rear ender from getting stuffed as far under the truck than if they had a clear path to the rear diff.