The Video Advertising Bureau (I've never heard of them until now) claims that Nielsen under-reported viewership during the pandemic:
www.nexttv.com
We've been discussing lower TV ratings this past year, and this group says it might be a result of Nielsen.
Networks, Distributors Blast Nielsen For COVID Response That Caused Plunge In TV Usage Numbers
UPDATED WITH NIELSEN RESPONSE: VAB cites 'systematic under-counting' as Nielsen lost 20% of its panelists
www.nexttv.com
We've been discussing lower TV ratings this past year, and this group says it might be a result of Nielsen.