I don't have much direct experience working in agile since I tend to work on the business side but I can tell you that the term agile is WAY overused. So many projects are described as agile when they are just waterfall with more steps. Leaders love to say they are working in agile because it sounds 'techy' and cool, but I don't think they fully appreciate what it is vs other methods. I wonder if a lot of the failed projects described in the article are some of those agile in name only kind of things.