Massive - Many players, objectively there were thousands of players commenting on the subject on said forums
Numerous - How can "numerous" be biased? It's an observation of a number, a smaller one than massive.
Frenzy - Forum threads that move at such a pace that one can't keep up with any discussion, wildly ranging displays of emotion from many players, anger and dissappointment among many of them... A frenzy is how I would describe it.
And how am I biased? I don't even plan to play Classic, I'm simply interested in it and was playing Retail at the time Nostalrius got shut down, as an avid poster of their forums at the time and someone following the Nostalrius shutdown (which I did not play). Maybe you should go back and look at the fact that Blizzard responded to the community on the Nostalrius shutdown, they invited those guys to Blizzard headquarters, they got ex Blizzard top brass to put in a plea for classic WoW..
No the shutdown of Nostlarius was massive on the internet and was very obviously a huge factor in BLizzard making the decision. Just because you didn't pay attention to it that doesn't make me wrong, and it certainly doesn't make me biased.