I didn't write the article, their point is that aspects of it (like the housing market) have changed in that specific period, not the period the ad you linked to discusses
The demographics of Austin have not meaningfully changed in the past 3 years. It's not in the data, it's just a made up hit piece. Even if it was slightly more white than it had been 3 years ago, no one say why that would be a bad thing.
