What denial? Their comment (as quoted) is not a denial at all. They have merely said that the article is based on inaccurate rumours and speculation. This in no way is a statement that the article is untrue. Information that is 99% coorect is still "not accurate" and rumour/speculation is not incorrect simply because it is rumour/speculation. The author appears to have fallen for Microsoft's careful wording and presented the message they wanted presented.