Rick Steves - Copyleftist

The Sunday, March 24, 2019, New York Times Magazine had a fascinating article, entitled "Rick Steves Wants to Save the World, One Vacation at a Time", about the travel writer's business empire as well as his philosophy of life, the universe, and everything.  Especially fun was a passage in the article describing a copyleftish provision in his first travel book, Europe Through the Back Door: "Anyone caught reprinting any material herein for any purpose whatsoever will be thanked profusely".  At quick check of my bookshelf confirms that his current books (sample size n=1) assert more traditional copyright protections, complete with "All Rights Reserved."