I personally would prefer not to get in to a debate about HK firearms. I am aware that many people hate them and that many people love them. I happen to like them, and have for many years, but I am by no means a fanboy that wishes to expend my energy defending them.
However, the article you link actually proves my point in a way from a marketing standpoint. According to the article HK's are overpriced and have a rabid following of fans that are willing to pay outrageous prices for them. So why then make a budget line of HK knives? For whom exactly? Fans of HK would likely pay exorbitant prices for an HK branded knife if it has at least a perceived high quality. And the HK haters who consider them overpriced and overrated would likely not buy an HK branded knife in the first place.
I'm not trying to be contentious and have no wish to argue. I'm not a knife expert, just a guy that likes knives. I do think that I understand business fairly well however, and it happens be my opinion that positioning HK as a budget brand is and has always been a mistake.