[projektfu]

This sort of thing happens all the time. The Japanese-style quality movement had many different fads (for example 5S) but most of the top denizens said that there are some basic universal facts about quality but every organization has to develop their own system that works. Consultants can help you do that but you can't follow a textbook and make a company. By contrast, the American quality movement has always been filled with charlatans and fads like "Zero Defects". Do Americans want religion and not mastery? Who knows.

I see Scrum a lot like I see Six Sigma. They take some of the processes you see from a successful team and they turn them into gospel for managing all teams. Sometimes they try to apply these processes to the rest of the company in places where they don't make sense. They create a bunch of certification levels so that they can claim you can't just learn it from a book. They make a bunch of money but leave their clients in a strange place.