It’s good to see more people in the community trying to move beyond the original concepts of responsive design and focus more upon what is best for the user (performance being one of those things). As with most articles you should take them with a grain of salt, for instance I disagree with the suggestion of replacing media queries with JS matchMedia to load in the CSS required and there seems to be a poor out of context use of a quote. Still, the basic concept of the article to look beyond RWD and find ways to make the web faster is absolutely what we should be aiming for.
We need to understand that, beyond any other goal, a mobile web experience must be lightning fast. Delivering a fast, usable and compatible experience to all mobile devices has always been a challenge, and it’s no different when you are implementing a responsive technique. Embracing performance from the beginning is easier.An excerpt from You May Be Losing Users If Responsive Web Design Is Your Only Mobile Strategy