Is Zealandia, the largely submerged landmass in the southwest Pacific, an eighth continent?

In 2017 a team of eleven geologists from New Zealand, New Caledonia and Australia concluded that Zealandia, a roughly 4.9 million square kilometre mass of continental crust of which about 94 percent lies underwater, meets every geological criterion for a continent, a case geologist Nick Mortimer argued would have been settled long ago if the crust were not submerged. The idea was first proposed by Bruce Luyendyk in 1995. It has been described variously as a submerged continent, a continental fragment and a microcontinent, and has not been adopted as a standard eighth continent in the conventional lists this atlas otherwise follows.