John Paul II was mentioned to demonstrate that you don't have to be an atheist to accept the Theory of Evolution. It has nothing to do with the Catholic doctrine of papal infallibility, whether or not one is Catholic, or whether or not the Pope is without sin (which has nothing to do with infallibility, btw).
You’re missing the point of my reply ... many Christians are offended that a leader of a mainstream church would distort Biblical truth just to get along with, what is considered, mainstream scientific view.
Papal Infallibility is a primary Catholic doctrine. When the leader of this church speaks, many hold it to be the final truth, especially those who do not have access the Holy Bible and those that can’t read. That is why many Christians were offended by that declaration from the Pope.
(BTW, you're the one who brought up the Pope. I was simply replying to your post)