There’s a notable parallel between Arthur Curry and Clark Kent (Henry Cavill), as Superman’s home world was destroyed in Man of Steel specifically because the Kryptonians mistreated the planet and used up its natural resources.
Environmentalism and respect for the planet have long stood out in Aquaman’s stories, and the movie seemingly won’t shy away from those ideas.
Thematically speaking, this plot point revealed in Jason Momoa’s remarks arguably feels like it is one of the most essential elements to bring Arthur Curry into the greater DCEU.
He is primarily a loner, based on what we have seen from him so far, but he has come out of his shell more and more because of his responsibility to the oceans.