Ok. I think it is important to go beyond Scrum. The authors of Scrum have shown that they don't know what they are doing: https://www.linkedin.com/pulse/scrum-very-confused-leadership-cliff-berg/

In fact, a colleague of mine spoke with Schwaber in the early 2000s and he confessed to her that he did not have a clue about organizational behavior. These are two guys who never led significant organizations themselves, and never built significant software at scale themselves. Nor have they any academic credentials in the relevant fields. One was a doctor, the other a consultant whose professional history has been scrubbed from the Internet. Given all of that, and given the widespread view that "old Agile" - which is dominated by Scrum - has failed, I cannot fathom why people treat them like they have credibility.