>modern examples of societies who achieved moral progress

But we haven't achieved moral progress.

G7/G20 countries have essentially merely physically outsourced slavery out of sight to second world factories and third world hell holes.

Through the magic of fiat money and currency exchange rates, we have deluded ourselves for half a century that we are in fact not colonizers and oppressors anymore.

Just one example are the Coltane mining wars in Congo: 1998-2008 5.2 million killed or dead from hunger (and it'd probably be higher if people hadn't more or less stopped counting after 2006). You probably didn't even know it happened,and yet millions today work at slaves to continue producing minerals for our digital comfort.