I agree with all of this. The quick version, for people who don’t want to take time to watch the video is this:
Creators put videos on YouTube, and they get ad-revenue based on views.
Other people/companies/etc take popular videos from YouTube and post them (in Facebook video format) onto their own Facebook page.
Creators don’t like this, because it deprives them of ad-revenue, popularity, and allows other people (on Facebook) to get the benefits of their videos (growing their own brand, increased popularity of their Facebook page, allowing them to sell other products, etc).
Here’s the Frank Green article mentioned at the end of the video: https://medium.com/@hankgreen/theft-lies-and-facebook-video-656b0ffed369