Its true we have neighbors but D'hara is still kinda isolated and he didn't say no one can get to D'hara, D'hara is isolated because though it is possible to have people travel to D'hara it unlikely to have them come and interact due to the long travel times, thus D'hara is isolated I would say. It is very possible to have people visit, Allison Kabranski actually came to Port Raviel on a pilgrimage not to long ago I believe.
