Captain's log, supplemental. Resettlement efforts in the DMZ are underway. The Cardassian and Maquis colonists who were forced to abandon their homes will make new lives for themselves on the planets their counterparts evacuated. The balance in the region will be restored, though the situation remains far from stable.
Considering Cardassians can still live on that planet consequence free, a build up could take months of years to approach lethal levels.
Cigarettes are lethal.
Alcohol is lethal.
Meth is lethal.
Yet there's no real hurry to stop some charming way of life before any one who dabble in these hobbies' body starts packing up.
It's like that old joke...
"Son if you don't stop masturbating, you'll go blind!"
"Mum, can I keep doing it until I need glasses?"