The article does not make the distinction between a COUNTERFEIT (a non-HP/Epson/Lexmark) and a refill or knock-off. The first instance is a violation of law. The second is a decision that many of us make to buy products that are clearly marked as being compatible or refills, but NOT the official product.
My HP LaserJet CP1518ni cost me $199 new, a great price. It would cost me more to buy it a new set of four (CMYK) cartridges. The knock-offs are $20 each, and are good enough for my use. Once in a while you get one that spills and makes a mess inside the printer. It is STILL worth it even accounting for that.
Shades of Polaroid. FWIW, story at the time was that Polaroid would have given the cameras away free just so they could sell the film but the gov't. said, "NO!"