“the TV ratings Nielsen reports have no correlation to the viewership numbers Twitter is reporting. For starters, as always, Nielsen is reporting the average viewership the debates generated, not the total number of views, which is what online outlets generally report. That’s not a new discrepancy, and at this point everyone in tech and media should know better but either doesn’t or pretends not to.
More important, under Musk, Twitter has moved to an even more fanciful description of “viewership,” where it’s not even pretending to count people who watch the video. Instead, it’s simply measuring the number of times someone has seen the tweet with the video scroll through their feed, as the Washington Post’s Will Oremus reports.”
https://www.vox.com/2023/8/24/23844369/musk-twitter-x-republican-debate-rnc-fox-news-tucker-carlson-trump-peter-kafka-media-column