If you prioritize US policy, being a permanent resident of a state and living in DC temporarily makes sense. But living permanently in DC forecloses an entire path through which you could have impact, i.e. getting elected to federal office. Maybe that’s the right choice if you are a much much better fit for appointed jobs than elected ones, or if you have a particularly high-impact appointed job where you know you can accomplish more than you could in Congress. But on net I would expect being a permanent resident of DC to reduce most people’s policy impact (as does being unwilling to move to DC when called upon to do so).
If you prioritize US policy, being a permanent resident of a state and living in DC temporarily makes sense. But living permanently in DC forecloses an entire path through which you could have impact, i.e. getting elected to federal office. Maybe that’s the right choice if you are a much much better fit for appointed jobs than elected ones, or if you have a particularly high-impact appointed job where you know you can accomplish more than you could in Congress. But on net I would expect being a permanent resident of DC to reduce most people’s policy impact (as does being unwilling to move to DC when called upon to do so).