Not anymore, he's not any valid priest. Ratzinger is a heretic. One of his books, written while he was still just a priest, was banned in Poland on suspicion of heresy, and that was all the way back in 1968. His attitude and actions have only gotten worse. Anyone claiming to be a Pope who can make a speech (at a Cathedral Basilica of all places!) and not mention the Holy Name of Jesus even once needs to have his head examined.
Ratzinger is in league with the infidel Jҽωs and the Protestant heretics, so he is altogether unCatholic.
St. John Vianney, pray for us.
Immaculate Heart of Mary, triumph soon.
Sacred Heart of Jesus, have mercy on us.