Because the reality is the silent majority doesn't care enough to engage in enthusiast-level online discussions. They just consume it as is. People like your uncle or workmate or dentist who casually watch these kind of shows and don't care enough to go online to talk about it. Majority of people who consume TV and film are silent about their opinions. Yes, even in this age of Twitter.
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I was talking about the show in general online. My bad with the context and phrasing, I should have clarified that in the second paragraph when I separated the statement. Like, it had a ridiculously low online presence when it aired, and barely got any retweets for a show as big as it was. Here, yes, there was plenty of buzz; though like you said it was more like bickering than buzzing. Well, still is.