They're getting downvotes because they're implying that people with a disability can't return their carts, which is ableist as fuck. People without a disability might not know this, but you can just ask for assistance at the check-out, and someone from the store will typically help you to your car and bring the cart back for you.

I know this isn't the way it's supposed to work "per the rules", but I think downvotes are an incredible tool for discussion. It's a way to simply and clearly make your opinion known without taking the time to write a comment. But because Spez and co. decided that downvotes "aren't supposed to work that way" 20 years ago, the worst people on the internet will scold you for using the voting system just like everyone else does.