Oh, I wish I had your optimism! Not that the post-homoerotic-but-still-homophobic world you describe and predict is perfect by any means, but it sounds a lot better than the current one. If nothing else, it would mean fewer "you're so gay, you drink/eat/wear/watch/say X" among my male workmates, where X is never something straightforwardly actually homosexual but, like, salad. Or the wrong brand of beer.

If anyone has any doubts as to whether the "you must be gay, because" culture is alive and well at present, and every bit as pervasive (at least in some places and demographics) as the media would have you believe, I invite you to drop by my university, where the dearest ambition of at least half of the males of my acquaintance is to get an Apatow film made from their lives (which would perhaps meet with more success if they would stop quoting their favorite lines from their Canon [Superbad, 40-Year-Old Virgin, the Big Lebowski, Family Guy, to a certain extent South Park, I believe you get the picture] all the damn time, it's like it's the only way they know how to express fannishness). Seriously, defensive heterosexual performativity is alive, well, and busy accusing all of its friends of being gay at any and all opportunity. (I started a really amusing discussion once by observing that I knew writers of gay porn [best short description I could think of for slashers] who thought about gay sex less than this crowd of supposedly 100% straight men. Because, yeah. Someone had a cake with drizzled clearish white icing on it and all the other guys made gay jokes. I mean, what.)

I'd be curious to see some kind of interpretation of why being mistaken for gay is SOOO HORRIBLE for guys. 'Cos the Sexually Predatory Gay Guy myth comes into play whether his "targets" are presumed gay or not, and worrying about whether they could get girls if the girls all thought they weren't interested would make more sense as a reason if they defended their sexuality toward women at all, instead of completely ignoring women so they can prove they're not gay to all of their guy friends. Is it that they would be excluded from their circle of friends if they were gay? It seems to be a really high level of defensiveness compared to other Faux Pas, like self-identifying as feminist or liberal, or being P.C. thought police &c. What's the deal?