Scotty, lately I have been looking for a used car. I have been watching videos on youtube on how, with an easily obtainable, cheap, device it is to change the odometer reading to any number you want. I've seen some of your videos where you indicate actual mileage can be read from the ECU with a device mechanic's use. Assuming the used car dealers haven't replaced the ECU, is the ECU the only true indicator of accurate mileage? Is confirming the ECU mileage with the odometer reading a typical part of a used vehicle inspection? In my used car searches in my locale, I am seeing many instances of what appears to be "mileage adjustment" of used cars, typically increasing their cost by thousands of dollars. I happen to live in Canada, but, from what I am reading and seeing on the web, this problem is worldwide. Why don't countries have laws that force dealers to reveal only the ECU mileage, the modern odometer is so easily manipulated, it cannot be relied upon.
Criminals are usually one jump ahead of the legal system - sometimes more jumps. For example, there is no "lemon law" in Canada, but an arbitration system set up to avoid having lemon laws passed to protect the consumer. Chrysler/Fiat/Stellantis has decided to opt out of that arbitration system so you if you buy a bad car from them, you are out of luck/options.
If you take a gun into a bank and steal $5000 you get a ten year jail sentence. If you steal $5,000,000 from customers with fine print, you get elected to your local Chamber of Commerce and can afford to contribute to lawmakers to make sure your fine print stays legal.