Objectivism is not human nature. There is nothing to compel people who make it to the top to continue playing fair. Ayn Rand completely misses how her belief that no one should be altruistic can and will end badly.
As for religious, people, I wouldn't use Pope Francis as an example of them. He is clearly a useful idiot corrupted by leftist influences.
Being "Altruistic" means you even will fall for Hitler. There exists a "selfish" care/love and it's NOT the "altruistic" kind, it's one that involves putting more thought in it of a sort, like with Equality 7-2521 and Liberty 5-3000 and Equality 7-2521 being "selfish" didn't mean he put off society entirely.
He just went about planning on helping it the smart way, given that even approaching the City, as a known criminal could lead to his death and chose to wait for guys who aren't mentally chained down. And he reinvented
electricity only for them to get-issued at that, regardless of his good intentions, because it'd make him "better" than everybody else.
Religion, Nation, Family, Race, the PRAISE of others etc
Those are all forms of collectivism and if it's man's nature to chain oneself for a "higher cause" even should it and its followers go astray, then I pity those men
Pope Francis has good intentions and believes he is right and follows a sort of code he believes is right. As far as he's concerned, God's on his side and the EU and the Far Left. His desire for that "higher cause" or his "altruism" blinds him from actually truly caring about others.
Besides, it's not as if the values of the first Synagogues in Ancient Israel and Judea were always compatible with those of even the 1950s and much theocratic debate required stuff like the base of very educated Rome to even begin to be contemplated and spread.
Slavery was a thing long before after Jesus and in the end it required people using logic trying to find a different way with the Bible to decide slavery was wrong even if guys in the Old Testament did it with no lectures from God.
Mankind's weapon against tyrants of the mind are freedom, logic and actual weapons. But most of all logic, without said thorough thinking, you can't question or reform what's long been taught or go against your leaders decisions.