This is currently true, yes. They're expressing hope/belief that this will someday seem unthinkable and strange.
FWIW, I don't necessarily disagree with that hope/belief, but I have some questions about how such a thing would work in practice. Clearly, some private organizations (like churches and political parties) rely on the ability to discriminate based on belief. But perhaps there's a clue there for how such a regulation could be drawn - those are not for-profit enterprises.