Back when I was in university I had a professor consistently show up 15 minutes late to our 1 hour lectures, read their online slides verbatim with no embellish

Back when I was in university I had a professor consistently show up 15 minutes late to our 1 hour lectures, read their online slides verbatim with no embellishment to enhance our understanding, and took a numerous amount of lectures off to go skiing. When confronted about it, I was told that people passing the class with high scores are the ones who don't even show up and studied straight out of the book on their own time.