You do realize that the non-missionaries in this picture didn't develop writing, agriculture, domesticated animals, sails, medicine, like anything. Peoples all over the world looked at the stars at night and from that developed math and science. Not so in this picture. Watch Mel Gibson's movie
Apokalypto for a view of the best civilization man could develop in the absence of God. So while a particular criticism may be valid, it has to be considered in light of the available alternatives or, as Churchill said, "It has been said that democracy is the worst form of government except all the others that have been tried."