I don't agree with the eco friendly paint being the one and only cause of problems SOME manufacturers have. First and foremost the main thing that protects the finish is the clear coat not the paint.
The problem is the amount of paint and clear coat that some manufacturers are using. Some apply very thin coats that chips and scratches very easily. Toyota is one of them. All you have to do is look at the front end of any older Toyota to see how many rock chips are in the paint. However, if you look at European cars their finishes hold up better because they apply a thicker coat of paint and clear coat.
It's not the paint because most automotive paint for all brands come from just a few suppliers, it's how much paint is applied. If two people paint deck chairs with the same gallon of paint except one person applies one coat and the other person applies two coats, guess which one will hold up better.