Dude, relax. No where does he state he won't update on Itch. The chapter 5 release on Patreon is still pre alpha. It's an incomplete version of the chapter. It's not 100% completed yet. The dev even addresses that here if you care to look. You can see the completion status of Chapter 5 over on the Patreon page as well. Still a scene and a half needing to be done for Chapter 5 to be considered complete.