I think the hype that you (and the author) are talking about exposes an interesting problem in products that target developers. Overwhelming popularity is generally awesome for a business / product, but in this case it seems that over-use may actually be diluting the core value-prop of Docker. If people were silly, which sometimes happens, I could see a snowball effect where Docker is generalized to be wholly un-useful, which would be terrible for the product. Not that that will happen, but an interesting thought.