And what the Pope was endorsing is employing the force of the State to do it involuntarily. There is a vast chasm between voluntary and involuntary “giving”. To conflate the two is perverse.
Every State taxes. The question is what they do with the proceeds. Here in the US, we are a year’s worth of GDP in the hole, and are enriching whom?
If you bother to read his actual speech (not the AP take on it) you will find that he said "to share with complete freedom the goods which God’s providence has placed in our hands." And when describing the tax collector Zacchaeus he says, "he simply inspires him to put everything, FREELY yet immediately and indisputably, at the service of others.