Did you see the outrage when they suggested requiring an internet connection? With the PS4 as a viable competitor they don't have the leverage to pull stuff like that.
The galling thing about the Internet connection requirement was that it was extremely overbearing DRM that inconvenienced users in many cases and benefitted them in none. Requiring IPv6 doesn't have the same stink about it.
He said "They should have made IPv6 mandatory", as in, it cannot use IPv4. Obviously, "when connecting to the Internet is required" is implied, and having an always online console is irrelevant to his point.
