IIRC, the Pope is only considered infallible when they say they are. Otherwise they’re just speaking as the highest ranking member. So most of the time what they say is not treated by members of the clergy as the literal word of god.
Maybe other Catholics are more in the know, but this isn’t a distinction I was aware of when I was a practicing Catholic. That might be because the Pope really didn’t come up much at all. I’m sure he influenced policy, but his words seemed to come up in the news, and not really much outside that.
Per capita probably isn’t a good way to measure this.
Car deaths should probably be by miles driven.