The concept of "explicitely" not supporting graphics did not make much sense with the X architecture and X servers under Windows being available. Of course MS dis not ship one, and of course X is considered deprecated by its own maintainers.
But de facto it is more a lack of support as in "we don't ship or own implementation yet" than "explicitely it does not work". It works already, Wayland just takes more effort and is just way more coupled to all parts of the stacks, as usual (but don't get me wrong, this sometimes has benefits too)
Officially GUI support is coming "really soon"™ [1].
[1] https://devblogs.microsoft.com/commandline/whats-new-in-the-...