Errr, i already said it's from talking to many people (~100-200 over the course of the year) who have lived there a very long time (in most cases, 30+ years).
Given i stated an aggregation of what their responses were, that's valid data.
Not sure what more you want here.
It seems you just violently disagree, but that doesn't make you right. It just makes you a data point in the other direction.