[yjftsjthsd-h]

By that standard, is a Hyper-V server running Windows? AFAIK, that's also just running NT as a guest.

[numpad0]

I too remember the "Xbox kernel is not Windows" narratives in 2000s-2010s. Clearly Microsoft then considered it "not Windows", IIRC especially on Xbox 360. It's not that a VMM that reside parallel to the Xbox kernel makes it not Windows or not. Sometimes they said it's "built with technologies from Windows" or sometimes it was "built specifically for Xbox" but they maintained it's not Windows.

[pjmlp]

Yes, Hyper-V is a type 1 hypervisor, Windows is just another guest OS.