I just "purchased" the book on Gumroad for $0. On page seven it states "This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0

I just "purchased" the book on Gumroad for $0. On page seven it states "This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License". Not sure how it's predatory. Aside: To any newbies that want to read the PDF or Epub version and it's no longer free on Gumroad, hit me up and I'll send you a copy.