Jared Oliphint comments on the implications of denying biological sex differences:
Perhaps the most intense implications will come from within the LGBT community itself. The “T” has removed the visible gender distinctions from the “LGB.” A physically heterosexual couple can identify as a lesbian couple. A gay couple can identify as a heterosexual couple, with all the rights to a traditional marriage (but later identify as a same-sex married couple if they wish). Don’t let the initial absurdity of the idea fool you just because the idea is new; few may be pondering these implications at this point, but that doesn’t make them invalid.