The article is not wrong, but it's about a coin that was originally POW and decided to become POS. Apples and oranges. Paycoin was already cloned from a POW/POS coin and hardforks were entirely their own doing. Many altcoins are POW/POS, certainly not a new concept.

Why are you trying so hard to find a way to justify obvious lies? Better focus on actual fact checking. It's really easy to look up Peercoin and find that it was introduced in 2012.