There was a better article a while back that distinguished between Washington, the company town revolving around the Capitol, White House, and political DC, and the District of Columbia, the vibrant city of 700,000 who have little or nothing to do with the political company town. Washington is incredibly transient. The District less so. There’s still turnover in the District, especially among the 20-something crowd that moves here for internships and nonprofits, but the District is otherwise pretty stable.