Most of these problems, such as refactoring, lightweight documentation, and tech debt can be mitigated with a good definition of done and a strong understanding

Most of these problems, such as refactoring, lightweight documentation, and tech debt can be mitigated with a good definition of done and a strong understanding of the sprint goal, whatever it may be. This is a classic "Scrum" v.s. "How We Interpret Scrum" hit piece.