Im sure the ecology is much improved by letting people stay where they are and be poorer. In fact we should start to remove people from all rich places so the can live in sustainable poverty.
It’s kind of what we get for completely wrecking the global south tbh - the number of democracies we overthrew, the drug cartels we propped up, the damage we did is finally coming to bear fruit and it’s just as sour as the soil we tilled.
Is the land in refugees home countries better able to sustainably support the populations on average, whether moving because of climate, lack of a way to support the people, etc?