God does not demand perfection of ANY of His followers. Perhaps one of the greatest feats of Mark (or was it Mathew?) is that it shows the Apostles in such a negative light, and yet shows repeatedly how Jesus forgives their iniquity and how they overcome it to become even greater. Look at the collection of them from all the Gospels:
–Peter looks away from Jesus when walking on water… doubts… and begins to sink
–How many times do the apostles question Jesus’ teachings or actions?
–When Jesus was arrested they had no faith to follow His word, so they fought instead.
–When Jesus was on trial, Peter, the first pope, denied… DENIED Him THREE TIMES.
–After Jesus was crucified, the disciples scatter to the wind and go into hiding. Jesus finds them and brings them out to ministry.
–Even then there are Apostles who doubt the resurrection and need it proven to them.
– Even afterwards, in Acts, we can see that the apostles were still flawed men lead only by the grace of God.
If the original Apostles were all fallen sinners, then why should we presume that any pope should have to be perfect to some standard that God (apparently) does not demand. God wants broken pots, because He makes us whole again.