Because Mad Dawg didn't tell you the whole story. Maybe he forgot? Maybe he didn't feel it necessary to explain the special conditions involved. Why don't you ask him?
If somebody says that the Catholic Church does not allow married priests, my work is done if I show it has allowed one. And in fact, the frist time this came up I mentioned the uniate churches and the "pastoral provision." The recent outreach to disaffected Anglicans has been in the news, so I didn't think I had to mention that.
If somebody wants to exult in claims of knowledge, I tend to let them do their own research.