Certainly is. The only thing that doesn't count as a view is if it were embedded, such as on facebook or here. It's not one view per person, something that should be apparent to anyone who realizes twitter only has 350 million users worldwide, most of whom have no interest in watching a Donald Trump interview or any other politics related interview, and of course many of whom weren't even online last night at 9 eastern.
Worse, Twitter says the avg engagement rate - watching a video, replying, retweeting, etc - is less than 3%. The "Views" include people who never even clicked on the video, just saw the tweet, and in fact, would include some people who didn't even see the tweet. If it went to someone's timeline, that's included in views, and twitter has no way of knowing if the person actually saw the tweet.
Like the Trump campaign as a whole, the 240 million viewers is a mirage.