They probably use delivery services for groceries or don't cook. The point of blue apron was it was an easy way for people intimidated by cooking to start doing it.
That's a very narrow view of how people get around. Is it based on a rural experience? I've never been outside of walking distance of a small shop for food shopping.
That's one point of Blue Apron. For me, the point is that I can spend 100% of my cooking time cooking, instead of planning or shopping. As a result, I cook a lot more, and I like that.