I understand where you are coming from, but most people who do this at times are more likely just ignorant than even "fuck them people". In-fact, the walmart near me has a guy waiting outside along with the security most of the time to collect carts once the store closes, so many people are like "he is going to collect all the leftover carts anyways".
Especially for those who have parked their cars a bit away, I really doubt such people are going to return all the way just to put a cart on the cart return location, rather than just putting the car on the side and just take off with their car.
To make things worse, there are staff on stores often these days that organize and collect leftover carts, so it's been a while since I have seen a good chunk of people return their carts to their return location, especially from parking lots, unless they are close to that return spot.