Masculinity is the antithesis of femininity. By eroticizing masculinity, which necessarily means eroticizing straightness, gay men are making the subordination of women sexy. This focus on femininity is used as a way to make its opposite, masculinity, intelligible. To be sure, lesbians march as well. The mainstream Lesbian and Gay movement is very good at tokenism.
Many lesbians actively support gay male sexual politics.
The appropriation of gay male sexual mores and politics is but one facet of this backlash against lesbian-feminism and feminism. In his book The Material Queer, Donald Morton argues for an historical-materialist analysis of lesbian and gay oppression. This severing of a dialectic between the economic division of labor and the social division of classes has had profound impact on theorizing lesbian, gay, bisexual, and heterosexual desire. Liberation is not possible by denying the material and historical centrality of desire. Gay men in particular, cannot achieve liberation through mutual objectification and sex.