I don't want to weigh in on this debate in general, but just to clarify terminology: "Gay" is orthogonal to "cis". "Cis" is short for "cisgendered", meaning "no

I don't want to weigh in on this debate in general, but just to clarify terminology: "Gay" is orthogonal to "cis". "Cis" is short for "cisgendered", meaning "not transgendered". "Cishet" (cisgendered + heterosexual) is used to combine the two axes, which may be what led to the confusion.