Comment: Typical goofiness from NPR and BGA. The tax data referenced in the "analysis" is from 2016, and is premised on the notion that people move immediately in response to tax changes. They don't; it takes a number of years to make the decision and effectuate a move.
A largely unasked question is becoming glaring: Is Illinois doing all it should to use artificial intelligence to make government cost less and work better? So far, the evidence says no.