The "mobile first" attitude in the Valley these days always struck me as somewhat misguided. As the article points out, it makes perfect sense in select niches, like Uber's. In many others, the non-mobile web offers a superior browsing experience and if your users prefer it, that's probably where your focus should be. As in all things, know your customer better than anybody else and you'll do well.

That, and the interesting fact that "mobile" is a broad term which seems to encompass tablets in most interpretations. Modern tablets often do a pretty good job of displaying sites which haven't been particularly optimized for mobile anyway.