That's exactly the problem. The insightful videos on Microsoft's Channel 9 made it clear that they went crazy with Metrics since Windows XP. What they don't get

That's exactly the problem. The insightful videos on Microsoft's Channel 9 made it clear that they went crazy with Metrics since Windows XP. What they don't get or simply ignore are the huge user base of power users and developers that deactivate the "phone home metrics systems" in Windows XP and newer. That's why they introduced the Ribbons-menubar and Metro-/Modern-UI - they believed or tried what they wanted by using skewed statistics based on one-sided metrics.