It's a false equivalency. A better use for this comparison would be for Viagra or something.
Compensation packages should be viewed holistically since they all ultimately boil down to the employer paying you. It doesn't really matter whether it's cash in your pocket, 401(k) matching, or a company car. What's relevant is the value of the compensation.
So depending on the value of the birth control foregone and the income of the individual, this can be anywhere from a trivial to significant inconvenience.