Yeah, there's one way, but some might cringe. "The Fingernail Test".
Go ahead, find any area on the paint and let your fingernail have at it in just a small spot.
No, I'm not talking about clawing your paint and leaving damage that might take some work to remove.
But I will say, that if a paint can be damaged easily when doing this, something needs to be done, you have no paint protection. Zero
Trust I do know that you can apply a carnauba, let's say Zymol, that cost you a $1000 a tub. Well sure, you can inflict damage, but to what degree? That $1000 tub doesn't necessarily mean your paint is now somehow protected better or longer than a $8 bottle of Nu Finish from Kmart.
And I know well from living in New Mexico for 14 years, and here comes some clown's cardboard box, or a Tumbleweed, flying across the road from the desert from 45mph high winds and wangs your car......well, lots of luck, nothing under the sun is going to protect.