text: "No one is suggesting otherwise."
  Everything else in your post suggests you haven't understood that you are precisely claiming "otherwise"!
  
  1. Statistically, I think you are deluded in your claim that Fatima is "what what most Catholics believe to be the most important event of the twentieth century".
  2. Even if they did, the Church says it is not an essential part of their faith.
  
  ( By the way, repeatedly throwing in the adjective "modernist" in such an inappropriate way does not help your argument.)