I agree that Persona 4 cops out on Kanji's sexuality, but it makes up for it because Kanji is awesome. While in the end, I think Kanji's not actually meant to be gay, I like to imagine him that way, or at least bisexual, because I think it makes for a more interesting character.
Of course, in post-Persona 4 content, like the anime, Golden, and Arena, they've started pushing Kanji's questionable sexuality as more of a joke than anything else. I think it's funny, but disappointing at the same time.
As for Naoto, I don't know. All the fanservice, especially in Golden, really bothered me, but, it's anime, so, whatever.
Of course, in post-Persona 4 content, like the anime, Golden, and Arena, they've started pushing Kanji's questionable sexuality as more of a joke than anything else. I think it's funny, but disappointing at the same time.
As for Naoto, I don't know. All the fanservice, especially in Golden, really bothered me, but, it's anime, so, whatever.