The problem is the company, not the commenter you're responding to. Is it really necessary for you to shame them when they expressed concern about this, just be

The problem is the company, not the commenter you're responding to. Is it really necessary for you to shame them when they expressed concern about this, just because they won't take as extreme an action as you want them to? They're expressing some honesty and self-awareness, and you're directing your outrage at them instead of Instacart. Why don't you do something productive with your outrage, like changing your own lifestyle and keeping it to yourself? Or better yet, raise awareness without bullying someone else's attempt to process their frustration in an even-tempered way.