Last week was a great week for lesbians coming out of the closet — coming out, that is, as middle-aged heterosexual men. On Sunday, Amina Arraf, the young vivacious Syrian lesbian activist whose inspiring blog “A Gay Girl in Damascus” had captured hearts around the world, was revealed to be, in humdrum reality, one Tom MacMaster, a 40-year-old college student from Georgia. The following day, Paula Brooks, the lesbian activist and founder of the website LezGetReal, was revealed to be one Bill Graber, a 58-year-old construction worker from Ohio. In their capacity as leading lesbians in the Sapphic blogosphere, “Miss...