As a marketing person this does not surprise me at all.
Facebook told everyone that video ads did better than text ads.
Turns out that was a baldface lie.
I'm betting Google will go down for this too - cause they've been telling everyone video is better.
As a marketing person I know that when I write a video script for a client the response rate is less than 1%
When I write something text based the response rate is 2% to 8%
https://www.cnbc.com/2018/10/17/facebook-lawsuit-alleges-it-knew-ad-measurement-discrepancies-for-a-year.html