That is because you dont believe that he had to go through that pain and suffering for the atonement of our sins, and as God on Earth-it is the foundation of our faith as we believe he is our Messiah, and you, not a Christian, with no malice, are still waiting or dont believe at all
Why the church would after vatican II try to sanitize the Passion and rewrite the Holy words of St Jerome to appease those who dare call Catholics Anti semitic because those that took part and handed our Lord over for crucifixion dont like their place in history is sad and a desecration to his name and God on Earth.
You are correct in your first paragraph, and I don't understand the second paragraph.