The article mentions the map "aims to create maps that represent all land masses and seas as accurately as possible."
So: this map has very good properties in some sense, very bad in others.
This map may solve some imaginary problem of public perception, but at the cost of losing valuable information easily gleaned from other maps,like northern and southern hemisphere, which places share the same latitude, which places share the same longitude. These are physical distinctions which matter.
I guess I am trying to say that a map that accurately represents the area of seas is potentially not what everyday map users want from a world map.
But I see that they optimized for that instead of my vague sense of usability. :-)