If your employer trys to deceive the shareholders in anyway to manipulate the price of the stock via a "canned or rigged" Q & A, he is in violation of SEC rules. With that in mind Nvidia cannot afford more bad press by covering up in reponse to a question. But then again if they want to make their company attractive for a take over that would do it.
And again it was a "batch" of boards that we are talking about. The same thing is true when ever you buy a new car or any used car. You always check the vin number because it told you what day it was made. If it was made the day after payday you knew it was going to be a lemon. Care to guess why?
According to what I saw, it was initially represented as a "Batch of Boards" but has more recently been intimated that it is a design flaw included in the entire generation 8 series, maybe you would have saw that if you read past the opening paragraphs.....