I guess people can always find a way to justify their behavior.
I guarantee many others have not done that same thing. I am coordinated enough to use a public restroom urinal without touching any of the disgusting things you talk about.
If I do feel the need to head back to the truck with full bladder, I will use the plastic urinal I keep in the truck then empty it properly during the next shower.
They can be purchased at any medical supply store and some pharmacies.
Just slap me and call me silly cause it never occurred to me to pee in a parking lot where other people walk.