It would have made more sense for the people of DC to live in Point Lookout Maryland. If they can deal with Super Mutants they can deal with Mutant Hillbillies.
I have the fanon theory that a combination of that AIDS-anologue and radiation is what made the Mutant Hillbillies tougher than Super Mutants.
But yes, Point Lookout does seem somewhat nicer.
Oddly, WORSE than the Capital Wasteland is the Pitt.
James should have forgot installing the Purifier in Washington. He should have installed it in the Pitt instead.
At least the one in the Capital Wasteland isn't making people naked Licker Monsters.