That's just not true. Gay men who embrace their masculinity ("straight acting"
![toofunny2](http://img.photobucket.com/albums/v232/korn0818/ATRL_Smilies_All/faces/toofunny2_zpsb54f2d2d.gif)
) are, if anything, celebrated and drooled for in the gay community. Gay men who have issues with their masculinity/femininity thus post things like "masc4masc" "no fems!" etc are deemed as self-hating (or more accurately, likely having internalized homophobia) which is appropriate.
(and they're often not nearly as masc as they think they are).