No, he's wrong. When the church lost its exclusive product it lost the game. Simple psych.
The Church never lost its "exclusive product." This is what the Feeneyites pretend. The teaching of Pope Pius XII in
Mystici Corporis, and that of the Holy Office in 1949 were only reinforcing the dogma, "outside the Church, no salvation."
John Lane is correct, the main threat has never been to EENS, Vatican II has been a direct attack against the nature of the Church. Vatican II makes EENS meaningless, as the Church is no longer an Ark with those inside and those outside.
Vatican II theology makes the Church like an onion, with the center being the Catholic Church, the closest layer to the center, the eastern schismatics, followed by Protestants, then by the Muslims and Jews, and then all "believers." All within the onion can be saved, but those not within the center lack the fullness of the truth.
The difference between the teaching of Pope Pius XII and the Holy Office under him is that they clearly taught the exclusivity of the Church. Baptism of Desire does not contradict with the nature and exclusivity of the Church. It is invisible, and those in this category are known only to God. The Catholic Church is the only means of salvation, all other religions are false and a means of damnation.