Given that TFA is only using leprosy as a metaphor, I suppose this is, strictly, off-topic.
But I have to say, in the many countries where leprosy hasn't gone away, there are still plenty of very real, non-metaphorical leper colonies. I know because I'm an eye surgeon who used to work in Africa, and I've been involved in outreach trips to operate on cataracts in leper colonies. If we hadn't arranged the trips, the people would have had no chance of getting their sight back. Nobody much cares about them.
Find another bloody metaphor.