I don't agree with this. The ratings will prove who's right one way or another, but I suspect that New England will garner great ratings the rest of the year. Furthermore, the playoffs surrounding New England will be the highest rated ever, including the Superbowl. And actually, the more they blow teams out, the more people will watch.
As diehard football fans, we love watching closely fought out games that go down to the wire. But the casual sports fan is intrigued by a dominant team; that is what matters most.
Look at Mike Tyson's first several years, when all he did was knock out people quickly; yet he had the highest ratings ever for pay-per-view, because people were intrigued- would anyone stop him? Would anyone even last 3 minutes with him?
Another example is the Chicago Bulls of the late 90's, the last really dominant NBA team. The NBA has never been able to match the ratings of that team ever since, even though most games the Bulls played were over by the third quarter. And I also note that Tiger Woods continues to have great ratings throughout his career. People want to see the best, period. By now, the hype is everywhere that New England is the greatest team of all time. People will want to see that, even if they don't know anything about football. (My wife, who couldn't care less about anything to do with football, stopped to watch a few minutes of last night's game. "Oh, is that them?" she asked me. "They're the ones everybody's talking about, right?")
Now it may be true that once the blowouts have started, people may tune out for the 2nd half, but again, not as many as you might think. The "running up the score" hype has started as well, and now people will stay tuned to see id there's any truth to that, or to watch Tom Brady throw another TD, etc.
I predict these will be the most watched games in NFL history...