If Joe the Schmoe wants to pull a Pat Robertson and blame such an event on the secularization of Portugal, he only makes himself look as stupid as Pat does (which really isn't that much of a stretch!).
I am happy for the gay couple having their marriage legalized, but quite frankly, why even want to be part of such an institution. Surely two people can find better legal options than marriage to identify property transfers, durable power of attorney, hospital visitation rights, and participation in income or investment matters. Marriage is an institution that signifies nothing. Promises made/broken ... so?