It highlights that the true business driver is that personal interconnectedness: author's friend had good relationships with both restaurant managers and drivers. This is what has allowed an MVP to be successful, not the kludgy "product".
Sure, this product still needed to be built for people to be willing to continue to work together, but businesses of the sort have survived for years on spreadsheets and similar "implementations".
Some of these constraints do not hold on the internet, but you still need to catch the attention of the right folk to get that word-of-mouth moving (which is why we see so many "Show HN" posts here: there're plenty of people here who can do that for others).