I’m no fan of Santorum, but I agree that this complaint is overwrought:
Item 3 is certainly a minority viewpoint – one professed by the Catholic Church but adhered to, in all likelihood, by a small minority even of Catholics. But it is a moral judgment, rooted in a traditional and long-held understanding of human nature that sex and marriage are inextricably linked to each other and to family — meaning children. It is not a policy prescription. The only policy prescriptions above from Santorum add up to contraception should be neither banned nor subsidized.
Which is actually a — dare I say it? — libertarian position. Don’t tell Rick.