Wow, taking another look at this.
This doesn't look like the paint failed at all, it looks like a Human Being picked up a suitcase that was sitting on a gravel driveway and threw it up on the trunk lid and scratched it up.
Those white marks are scratches in the paint that are man made on top of the nice paint job. Same with the marks in your hood. Someone has been setting things on the flat surfaces of your trunk lid and hood, like it is a work bench or table top.
You know, like UPS cardboard delivery boxes, ice coolers, laundry baskets, cardboard box your new kitchen faucet came in.
The patterns of those scratches look like someone picked up some gravel with a box and then slid it around back and forth on the trunk lid.
My Opinion . . . Paint failures don't have definite start and stop points.
Some of those scratches may buff out of there with some rubbing compound, depending on how much clear came to the top of your single stage paint when it was painted many years ago.
If it is single stage paint you have to be real careful when buffing so you don't get down into the metal flake and create that mottling look.
If you were lucky enough that it was repainted with Basecoat/Clearcoat then it will be much more forgiving to work with.
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