Mainstream status:

EY's position seems to be highly similar to Frank Jackson's analytic descriptivism, which holds that

Frank Jackson and Philip Pettit (1995). According to their view of “analytic moral functionalism,” moral properties are reducible to “whatever plays their role in mature folk morality.” Jackson’s (1998) refinement of this position—which he calls “analytic descriptivism”—elaborates that the “mature folk” properties to which moral properties are reducible will be “descriptive predicates”

Which is a position neither popular nor particularly unpopular, but simply one of many contenders, as the mainstream goes.