I dislike side rails, so I blocked it, and this appears to block the video that follows you around the article too. Here's the uBlock filter I use, which would probably work on other ad blockers:
I especially love how the video waits for you to start scrolling. I've noticed that as a vulnerability in autoplaying media, since the scroll counts as a user action and the browser will allow the site to "play" the media at that point. Some sites use it to "auto"-play videos with sound, working around the user's preferences. Don't any of these sites realize how hostile this behavior is?