Here's the take-away quotation for me: The better the professors were, as measured by their students' grades in later classes, the lower their ratings from students. "If you make your students do well in their academic career, you get worse evaluations from your students," Pellizzari said. Students, by and large, don't enjoy learning from a taskmaster, even if it does them some good.
I don't think that applies at the college/university level. Evaluations are at the end of the course and you will know if you have learned a lot. The problem is profs just reading the textbook or parts of the textbook in a powerpoint, without challenging students.
Based on my experience at University great teachers who push and challenge students are generally disliked by the large group of students that don't particularly want to be pushed or challenged.