The idea that men and women are interchangeable cogs is Marxist. That’s why she’s out there. I would refuse to participate in teaching my sons that.
1) Utopian socialism in general and Marxism in particular are not just gravely mistaken economic theories. They are complete social ideologies, dedicated to overthrowing (fundamentally transforming, as 0bama put it) every aspect of civilisation. As such, no detail (not even children's sports) is too small or too insignificant for the utopians to attend. Destruction of the family and concentration of all power in the collective is more important to utopian socialism than command economics.
2) American society is already thoroughly infiltrated with utopian socialist thought.