you know the thing about "historians will say they were just really good friends"? well queerness has been a thing for forever, however due to cultural biases, homosexual depictions were certainly erased, censored or sanatized over time, so as to not let inconvenient pieces of information to oppose the vigent propaganda.
it's true we may never know what the original pieces really were, and wether something used to be explicitly queer representation or just an unrelated coincidence. the thing is, even if it wasn't originally gay, due to the lack of representation growing up, many of us learned to extrapolate the narrative so we could find ourselves in a world that would otherwise deny our existence.
the devs most likely found that this gilgamesh tale was at the very least close enough. if it really was representative or not, doesn't really matter. minotaur hotel is a gay narrative and that's going to be the world view that is represented on it.
now of course, i can't speak for the devs interpretaion of it, but i wanted to share my perspective in that it's important to give fiction the grace of not having to always be an accurate historical depiction, and that political agendas definitely put a hand at rewriting cultures they don't approve of.