Not the guy you responded too, but his point is obvious.
The assertion that capitalism is the root cause of the atrocities listed based purely on their existing at the same time is evidence of nothing.
People have always been like this, increases in technology have helped increase mans mistreatment of his fellow man. Economic system be damned, that's not the point.
Or do you think mercantilism or feudalism where actually any better?
Capitalism being better than feudalism is not a high bar. A system that ties a human life's worth to the capital they generate will always create disparity
Well I’ve got bad news for ya, there’s nothing any better that’s yet been devised.
Sure there is. It's called socialism. It's where everyone's basic needs are provided for, but people can still earn money above that and buy nicer things.