Slightly so, but I don't think it's a biggee. A black pickup in Mexico? Like a state highway snow plow painted safety white?
Look, if you have a car or pickup that a US or Canadian teenager would live on the floor out of embarrassment (to be seen in) it is perfect for Mexico. Brand new is an enticement. But a newer tow vehicle without all the eye-candy accessories is pretty darned safe. I would not leave such a vehicle parked on a city street for a long period of time. Your supermarket parking tip IMO is excellent BTW.
The problem arises when an individual chooses to own a showpiece tow vehicle or toad and wishes to travel down here. You can't have it both ways. Sorry. It's a simple matter of Is's and Ought-To-Be's. The latter never have fared very well down here.
A tiny minority of younger people here sometimes get a stereotype stuck in their head "If they can afford one, surely they can afford another". They are thieves, but they come up with the damnedest rationale. American, Mexican, Zulu, it doesn't matter the nationality of the mark.
In 1976 just outside of Tepanatepec, Chis, I was stopped by a group of people in the road. Men and women. They told me a bus had been hijacked and they were advising people not to go up the grade. That was 38-years ago Moishe.
IMO the safety issue here is a universe apart of what it used to be. Out of the THOUSANDS of RV'ers who came last year, one had a bad juju experience. Traumatic. Now it's turned into (on this forum) a national crisis, unprecedented, much worse than the RV traffic deaths in the USA with total destruction of rigs, million dollar lawsuits, etc.
What would have been better? A sideswipe by a big rig? One that left the car unable to be towed and the motorhome blessed by an new abundance of fresh air ventilation?
Cars, highways, crossing the street are all risky. "Oh hell, at least he did not die at gunpoint" is small consolation to a victim of an accident.