Here’s their headline:
Chris Hayes’ Climate Coverage Towers Over His Primetime Peers’
Analysis: Hayes’ Recent Documentary Is Simply The Tip Of The Iceberg
I think what Media Matters means is that Hayes’ ratings are the “tip of the iceberg,” as most viewers — the submerged part of the iceberg — aren’t watching. Hayes’ towering climate coverage came in fourth on Friday in the key demographic for advertisers (25- to 54-year-olds):