I didn't read this article, but I really hate the tag line "done right". It expresses such a poor sense of humility, which is one of, or perhaps the most, important traits in the world of software
“Here’s how we did this. Feedback welcome” would seem more appropriate.
Perhaps it doesn’t fit the hyper-aggressive mould of the would be titan of industry.
That said their engineering blog seems to be down so ¯\_(ツ)_/¯