My favorite part (next to the summation):
He acknowledges that human sexuality is, by nature, amorphous and on a continuum, but then explains that this natural state of affairs is unhealthy and must be vigilantly guarded against. Because if not, the people guarding against it will be told that they were wrong for their past judgmentalism. Or something.
Go read it all! And behold the dismantling of sexual repression, in all it's glory.