I'm not saying it should be a standard, and in fact I would argue that it's a completely unreasonable standard. I mentioned, positively, converts to Eastern Orthodoxy who join the clergy. (One of the best known modern writers about Eastern Orthodoxy is Kallistos Ware, a metropolitan bishop, who converted from Anglicanism at age 24. Nobody would call him second-class!)
I'm just saying that it happens to be true for Roberts, and that this differentiates her case from Dolezal's.