I realize there is snake-oil in every profession, and I have more than likely contributed a little along the way. However, seldom do I get irritated by anything more than someone who bestows the virtues of a methodology and fails to use that methodology in their own business.
Recently, I interviewed Dominica DeGrandis, who teaches and coaches teams using Kanban for IT Operations and Development Operations. She is an independent consultant as well as an associate of David J. Anderson. Her background includes ten years of doing Configuration Management, build and deployment automation, and server & environment maintenance, followed by leading teams performing those functions. When I asked if she uses Kanban in her personal life, you have to listen to the response I received.