Youtube is the biggest video streaming website. Obviously, user can monetize the videos they upload. However, those who upload content related to Final Fantasy 14 won’t be able to monetize it.
Final Fantasy 14 is an MMO RPG and obviously, gamers record their playthrough and upload it on Youtube and some of them even monetize it in the form of video guides and more.
Square Enix blocking monetization for content based or related to Final Fantasy 14 is beyond comprehension. I hope this situation resolves soon.