v6 has dual stack, Teredo, 6to4, 6rd, 6over4, ISATAP, 6in4/4in6, NAT64/DNS64, 464xlat, DS-lite, MAP-T/E, 4rd, LW4over6... it has pretty much every possible transition method that can work with v4.
You could make a reasonable argument that it has too many of them, even. Where did you get the idea that we didn't think it needed any?
You could make a reasonable argument that it has too many of them, even. Where did you get the idea that we didn't think it needed any?