That is a stupid statement if he is referring to quality, which he is kind of, by saying to "see if its worth it". A better explanation would be, to see how it feels in the hand. I do not know which knife you are talking about, but if it is a blatant rip off, at least the ergo's should be the same. You still have the fact that its going to be a different weight, and usually thinner anyways though. So that point is only half reasonable.
I usually give the new comers the benefit of the doubt when it comes to intentionally starting an emotionally sensitive thread. When I was new to knives, and did not have a passion for it, I don't think I felt as strongly against rip offs as I do now. We should give noobs some leeway and try to school them.