After reading the whole topic, I can say this is why I was so reluctant to them using Greyhawk as the default/sample setting: it's a closed-minded setting. A default/sample setting needs to be open to all the options in the PHB, even if these options go beyond the Tolkien four.
On topic, having mostly played in Official settings (Nentir Vale, Forgotten Realms), my games tend to be humanocentric. I try to reduce that a bit, giving non-humans (specially non-Tolkienian non-humans) more relevance, or trying to show the realities of a place where one race dominates over the others, but I shouldn't bother. My players don't care about these things, they just want to have fun, and I have no problem with that.