Cold water:
Getting that species to spawn has been done way before, though probably not in the numbers claimed now: the earlier attempts were simply aimed at achieving a fertile spawn, regardless of the number of spawners.
The article goes on to state what has been known in the trnches/front lines of mariculture for decades: It ain't the spawning, it's rearing the larvae that's the challenge.
Call me cynical, but it sounds at least partly more like a press release to help with securing funds for the effort, than a genuine description of a breakthrough.
--dark, grumpy, suspicious horge