I can't stand that argument. It ignores history and millions that died under colonial rule, or episodes like in China when the economy was ruined because the western powers wanted to pay for goods with drugs. Or india where british rule deindustrialized india and forced it to buy salt from a monopoly. Or southeast asia where rich kingdoms where plundered and basically forced to become agrarian exporters. It also ignores the real growth that happended in the last 10 years in parts of africa.

The argument is basically racist, they don't know what's good for them, let's show them. It ignores that the western world has a 300 years development advantage concerning democratic institutions and the economy.