https://hn.algolia.com/?query=null%20island&sort=byPopularit...
I'd bucket it as one of a standard set of "quirky" subjects that get covered again and again on slow news days.
At least this is a fictional island, albeit in a real place, rather than coordinates in an inhabited place bringing unpleasantness to unwilling participants.
The piece at AO was in turn a repost of an article Tim St. Onge wrote in April for the Library of Congress blog, at https://blogs.loc.gov/maps/2016/04/the-geographical-oddity-o... . The article was further covered by ScienceAlert (http://www.sciencealert.com/welcome-to-null-island-the-most-... ) .
The WSJ journal is strongly based on the St. Onge's article, including re-use of the depiction of Null Island and quoting St. Onge. It does not contain anything which comes from the MinuteEarth video. It's as if the WSJ and MinuteEarth were independent works based on ideas that were floating around a few months ago, where both sites thought it was worth more coverage.
Interesting how these things move around and become part of the zeitgeist, yes? I see no need to cast aspersions upon the WSJ.
EDIT: the comments in the LoC article point to a 2009 tweet about Null Island, at https://twitter.com/chriscurrie/status/1546199025 and that nullisland.com was registered in 2008.