That's not true in the slightest.
Market drives the ratings. Espn provided data as much a few years ago in an column I can't find. Even when they the Steelers, Giants, etc are bad they sill far outdraw good teams from a small market. For example, Amazon prime averages 11.some odd million views for football. Cowboys-Giants a few weeks back, 16.6. Broncos Saints before that? 9.9