This user doesn't have a paid signature, so he's not spamming to earn money. Could it be he copied the text because it's interesting and fits the discussion? If so: shouldn't he get a warning that Bitcointalk isn't like other internet forums when it comes to plagiarism?

It's always good to remember how this topic started: shitposters copying posts from other Bitcointalk users. I don't think that's the case here.