Kanban has come of age and what that means is that there are now just as many (maybe more) misinterpretations of it than ever before. I've seen this happen when XP became popular, Scrum, and Lean - so this is no surprise. There are some differences, however. With Kanban, there are thought leaders, such as myself, who are willing to say what Kanban is and not just say "it's what you do after you understand it." While Kanban isn't a thing actually, it is somewhat well-defined and it is easy to tell if many of the things said about it are true.