It’s as clear a demonstration as you could ask for that blasphemy is always parasitic on the sacred. Find the Word You Must Not Say and you have found the thing a culture holds sacred. When the blasphemies no longer offend, the thing blasphemed is no longer sacred. Thus, both the F word and the N word speak volumes about what is sacred in our sex and race obsessed culture, while the fading of Catholic-based blasphemy in Quebec tracks with the fading of Catholicism.
Chesterton said, “Blasphemy depends upon belief and is fading with it. If any one doubts this, let him sit down seriously and try to think blasphemous thoughts about Thor.” This is why the New Atheists spend so very little time sneering at Quetzlcoatl or Zeus and so very much time sneering at the God of Israel and his only begotten Son, Jesus Christ. It is the living God, not the dead ones, who still poses a threat to the prideful.