This article is untethered from the mammoth amounts of research that's been done specifically on how people learn. The answer to this question doesn't lie in anecdotes about various professors' "philosophy", in fact that kind of approach is a huge barrier to actually improving the learning that occurs on college campuses. This is an opinion article, so I understand it's not thorough reporting, but the author should familiarize herself with the literature.
A book like https://www.amazon.com/Make-Stick-Science-Successful-Learnin... is accessible and provides a good survey of what we know about how the brain learns and remembers things, and how it relates to existing practices.