You can exchange coaches.The difference is you can return the milk or go to customer service and have them refund you. You control that yourself.
You can’t exchange the coach, and neither you nor I have any direct control over Mike’s job status. That is the biggest difference in your examples of lawn mowers (a previous post) and now milk.
So, you find my thoughts on it to be weird, and I find your thoughts on it baffling. Where does this leaves us? Let’s just agree to disagree.