"The thing I have noticed is when the anecdotes and the data disagree, the anecdotes are usually right. There's something wrong with the way you are measuring it." - Jeff Bezos This is a tricky article because I can tell it's using the term 'exodus' and 'myth' differently than I would. It's abundantly clear there is a lot of migration out of California. Just ask Texans, Coloradans, and Idahoans.
That Bezos quote is pretty dodgy, but to address your point: Ask anyone in Denver and they'll tell you there's a mass exodus out of Chicago. Or ask anyone in Miami and they'll tell you there's a mass exodus out of Philly. People move around. I think this is a similar phenomenon to buying a car and "seeing that car everywhere all of a sudden." It's all about perspective. In this sense, data is always better than anecd…
What this actually means is that people are watching too much TV.