“views” is anyone scrolling past the video. And if the same person does that more than once, it is another view. Also includes those who actually did watch it who watched it more than once, and / or watched part of it and then came back later to watch other parts of it - each a separate “view.” X/Twitter is also as ubiquitous outside of the US as it is within.
That doesn’t diminish the fact enough people were interested too at least scroll past it that many times - but difficult to say it was the “most watched interview ever.” The Oprah interviews most likely involved people sitting down on the couch and people watching the whole show from start to finish. Today, it can be people sitting there casually scrolling past something while fidgeting around on the phone and may or may not even be paying that close of attention.