Tracked down Chief Nerd's Tweet as well, and it was tagged with Community Notes-

"While the tweet containing Carlson’s monologue had 74.9m views, the actual video of the monologue had only 22.1m views meaning over 52m people who saw the tweet did not watch the monologue."

https://twitter.com/TheChiefNerd/status/1652002473010245645

Twitter used to count a view of 3 seconds or longer as a view, but I believe that's changed. Somebody would have to verify that.

I do know for paid accounts, you can see if 25%, 50%, 75% or 100% of the video was watched now in Twitter analytics. It's likely all 4 of those metrics count as a view.