Agree.
I went back and looked at the post again to see if I did read too much into it. Overall, no. I didn't.
However, you both are correct that where you live does help shape you with how you become. Growing up I lived in Michigan and Arizona. The culture of people surrounding me in both of those states was different. In Michigan, my classroom was predominately white and black, with an occasional asian or latino. Arizona, predominately white and hispanic. I consider myself fortunate to have a wide variety of friends that weren't the same as me.
That being said, that diversity and progressiveness was in middle America. It isn't solely tied to the coasts.
As for pop culture (fashion, music, etc), I think it used to take longer to migrate from the coasts. I remember listening to The Cure in AZ and when I went to Michigan in the summer, no one had heard of them. By the following winter it hit them. But now, with social media and instant everything the time is minimal.