As someone who knows nothing about the technical aspects of that post, I respect the author of that blog and I love the communication of Dell on Linux issues and that they are involved in writing fixes for upstream and am happy that I bought an XPS 13.
What is the relationship between Mario Limonciello and Dell's Sputnik team?
Mario used to be the Linux architect on Sputnik but is now focussing on Dell's broader Linux solutions. (Jared Dominguez is now the Linux architect on Sputnik but he also does other things as well). Mario still helps us out with broader Linux-related issues.