i would spray all my windows right after cleaning them, and if it doesnt turn yellow after a while, ill spray the rest of my car, wheels, ect.
it says its a silicone base spray in the article so i doubt it will turn yellow since plastidip clear doesnt turn yellow and thats a silicone spray
Alternatively you could Wrap/Dip your car and spray this stuff on it to prevent having to clean it all the time
EDIT
lets hope its not like this product