Maybe true, but the bits he's picking out are kinda wrong IMHO. WPF hasn't changed much since it was first done in the mid 00s, Microsoft didn't put the same improvement into developer productivity for WPF as they have for ASP.NET (Webforms -> ASP.NET MVC, vNext etc). WPF workflow is still painful despite it being around for nearly 10 years and Xaml as a concept being around longer.