I think very, very few articles actually want to touch on the reason that Agile/Scrum goes bad: Lack of management/client buy in. If management or the client aren't going to work in an agile manner as well, then that just puts the devs at a disadvantage, and makes for a crappy work environment. Devs lose any agency they had in terms of what to work on, and as a result become disgruntled and stop caring about the work.