Ignoring cost, and assuming I already know what I want, I would much rather be able to do all my ordering by texting or calling a real person. Even the best, most streamlined ordering UIs are clunky and time consuming compared with "I want a cheese pizza from Johnnie's"

I think what you, and the parent article, are responding to is that it's really hard to actually have an always on-call, fast-acting butler at your service.