Well plagiarism is against the rules. I am only critical because I was accused of something without actually breaking any known rules so now I'm more skeptical. That said if you find a word for word copy of someone else's work being treated as their own original work then it is plagiarism. The only thing he had to do is put his sources and use quotes like myself and others when citing the work of others.
Nope. He is using fake sources. He is using articlerewritetool a web tool that allows you to rephrase articles and then adding fake sources similar to the original article.