I disagree with his entire notion. She didn't want all of us to pay for her BC - she wanted her employer (or provider) to cover BC and for her employer/provider and fellow subscribers to share said burden.
If you want to take it up a level, she is currently paying premiums to a national provider that is counting on the fact that they do not cover BC for the subscribers on her plan. However, all of the money gets pooled together. In a sense, this woman is paying for the others with insurance with this company who have plans that cover BC to have sex without risk of pregnancy while not receiving the same benefit. In truth, her premiums are adjusted (in some minute way) to account for the fact that BC is not covered - but to me the above argument highlights the stupidity of the Rush, et al. arguments.