The point I took from the author is that the expectation of same-day or even two hour shipping is erasing the barriers to consumption. There's a big difference between a weekly walk to shop or drive to the mall, and 24/7 instant delivery with just a click. It's no secret that the pitch on fast delivery speed is that people will consume more.
Anecdotally, many people I know who have Prime seems to have steady streams of packages arriving at their door - snacks for the kids one day, a new sweater the next, a package of toilet paper the next - with the logic that they have paid for the delivery, they might as well use it. Each in a separate trip, box etc. And if an item is incorrect or damaged, they often don't even bother to return it, they will just order something else.