Putting blinking things in the periphery of vision is a very well known pattern when you explicitly want to draw people's attention. If this were email notifications, blink away. But it's actively drawing the reader away from the core purpose of the site--reading the damn article--without adding anything of value.
"Oh, other people are coming here? Social validation! I'm reading the right things! Now what was I reading?" Complete malarky.
Seems to hold up pretty well.
I agree though, it can be a little distracting, but it's out of sight with a little bit of scrolling.
While I'd be a fan of the feature on a desktop this is the kind of thing that makes me want to see uMatrix work on Android.
These features are never implemented as opt-in and the only way to opt-out is with something like uMatrix.
I tried to read the article for 15 seconds but the highlight just made me close the whole thing.
Sure, go ahead, downvote my comment while dismissing it with snide remarks. You're just contributing to the reasons why people disable Javascript or relegate it to on-demand / click-to-play functionality.