Having a minor, non-viewpoint character who might be gay (or two, in this case) is very different from having a protagonist who has an ongoing relationship with somebody of the same sex during the book. Defining anything beyond some line to be "gay fantasy" doesn't seem useful to me exactly, at least as a basis for our future behavior.

I do see the utility of having some vaguely clear definition to use for counting things already published and coming up with statistics.