This is a crazy story. Especially the part where the person just claimed the other person's work as his own, not even pretending they were doing another version

This is a crazy story. Especially the part where the person just claimed the other person's work as his own, not even pretending they were doing another version of it (more typical plagiarism). A small version of this happened to me many years ago. A dude who was a technical editor on my first book (and actually seemed to get fired by the publisher, because another technical editor replaced him midway through), claimed to be an author of the book on Stack Overflow and his own web page/resume. Truly bizarre because only my name was on the cover.