I got a different ad, viewing on Nexus 5 I get a non-video ad that fills my entire screen, but the X box is off the right of the screen and I can't scroll or pinch to view it & click on it to make the ad go away. Made the page completely unreadable for me.

(Going back and clicking the link again, I can now read the article.)

I can after (and only after) disabling my adblocker. Possible A/B test?

Its an autoplaying (but muted-by-default) video in a Lightbox.