While we should be careful not to reduce gender to cultural stereotypes, we must realize that uprooting gender from biology effectively kills it. If gender can be anything, it ends up being nothing. If it issues merely from psychology or culture, it’s as unsteady and transitory as are they.
Addendum: Planned Parenthood is expanding its already horrific business model by getting into transgender care. See “Planned Parenthood is Helping Teenagers Transition After a 30-Minute Consult. Parents and Doctors are Sounding the Alarm.”