Sometimes I buy multiple sizes of things and return the ones I don’t need. It’s mostly a convenience thing. I can go to an amazon locker and quickly return what I don’t need during my normal errands.
Problems like that can only be fully fixed by correctly taxing externalities so that they're priced in. Telling one person on the internet to change their behavior won't have much impact.
I 100% agree, but it's not nothing, and the person I replied to isn't the only person who saw the comment.