No, he means the philosophy of materialism, "The theory that physical matter is the only reality and that everything, including thought, feeling, mind, and will, can be explained in terms of matter and physical phenomena." However, not all atheists are materialists, nor are all materialists atheists. The term "atheistic materialism" adds nothing, since the philosophy neither requires nor is distinguished by atheism, nor is "atheistic materialiam" qualitatively different from other forms of materialism. A good sign that the speaker isn't really engaging the topic.
As for the apologetics, we can discuss rates and statistics till the cows come home, but that doesn't change one basic reality. The Church was responsible for covering up and enabling the crimes of pedophile priests. This includes then Cardinal Ratzinger, who wrote in 1985 that defrocking a pedophile priest should take more time, and any such decision should take into account the good of the church and the reaction of the community of the faithful. He was involved, despite protestations to the contrary by the Church.
Honest, holy men own up to their mistakes, especially such grave ones. They don't hide them, deny them, or explain them away. Nor do they accuse those holding them to account of conducting a "smear campaign."