The creationist strongholds in the developed world are mainly in America, which is becoming less religious (slowly but surely, muahahahaha). Flat-earthers are basically extinct.
Basically I think that religion is going to continue to liberalize, and in time absolute creationism is going to become a thing of the past. One of the things that will rectify the problem is a better science education. My biology teacher is going over the theory of evolution by natural selection, and actually spent several classes debunking common creationist myths and misconceptions of evolution. I think he should get a medal.