It's hard refute that point.
I have yet to see a local news outlet with enough creativity and intelligence to generate fear, negativity and hysteria in any measurable percent of the population beyond 80 year old paranoiac shut-ins.
What they typically produce is boring, repetitive and transparently self-serving wrappers for commercials. The majority of people only watch to catch the sports or weather.
Moore's opinion of the American people must be very low if he thinks the idiocy of local TV news has any major impact on public opinion.