I don't really think you have to be in the upper echelon of consumers to afford the occasional grocery delivery. It's more about not being in the bottom echelon

I don't really think you have to be in the upper echelon of consumers to afford the occasional grocery delivery. It's more about not being in the bottom echelon, i.e., you definitely do need to have some disposable income every month. As with many personal finance questions, it's very hard to make straightforward comparisons because people spend their money in such drastically different ways. The person going out to bars every weekend might express exasperation at the person ordering groceries through Instacart every other week, without realizing that they're both spending the same amount of disposable income but on different things.