The sheer irony involved in that original comment and his choice of example should have been immediately obvious. The fact it wasn't makes me think, frankly, its OP who is the issue.
The fact I have to put up with bullshit from people who live in the [insert location here] on a regular basis and make condescending comments doesn't mean I assume the entire [insert location here] behaves that way in general. Rather, I recognize that its the specific individuals I deal with in that instance that are the problem and not the general population.
The fact both of you immediately jumped in to defend the generalization and expand on it, frankly, makes it even more ironic to the point of hypocrisy.