This doesn't seem to be from 2016 (some identifiers suggest that it is, but it cites papers up to 2018 and it says that a tweet from 2016 is two years old).
Indeed. "Conference on Very Important Topics 2016" is not a real conference, but placeholder from a template. Maybe it was left behind by accident? The paper is from the PLATEAU Workshop 2019.
Ok, we've added three years to the title above. Thanks to both of you!
Oh I thought "Conference on Very Important Topics" was Twitter