Wow. Just...wow. I watched one of the videos very carefully. Absolutely natural movements of eyes, eyebrows, lips, even the hair resting on the woman's shoulders. The text even contained a double entendre, and the facial expression was exactly right.

Of course, I'm sure that whoever put these demos together also invested time in getting them right. Still: so would anyone seeking to put words in another person's mouth.

Imagine your favorite (or least favorite) politician coming out with a speech promoting something awful. Even if the video were immediately debunked, people would remember it. And many people would never believe the debunking.

This is the world we now live in: you literally cannot trust anything you see online.