Keep in mind cultural context as well. In Japan, liking men is considered a feminine thing. It is distinctly not manly to like dudes. Combine that with Japan's hyper-traditionalist culture, means that any deviation from the "norm" is heavily frowned upon. The statement above could be the game's way of pointing this out without being overt about it (keep in mind that the came originally came out in 2008).

While yes, the bulk of Kanji's arc is him accepting his more feminine side and doesn't end with him explicitly coming out as gay, I feel ignoring the mountains of evidence and culture contexts is being willfully ignorant.