Humanism? How do you check this? Why not “It’s extremely probable that economic development brought the quickest most effective reduction of human suffering”? Why not “Fossil fuels brought the quickest reduction of suffering”?
Maybe our interest for humanism depleted when we had to get rid of fossil fuels because of climate change; at which point we noticed that humanism was only a pipe dream atop a fossil-dependent society, and coal had made our life much easier for a short period of time, until we fell into hard times again.