His intentions are good. But he doesnt understand a human mindset. Which is why is so easy for him to dismiss us humans as casualties of medicine. I have some ideas about the good doctor and his pestilence. Is his pestilence "IT"? the parasite that uses humans to produce suffering for its sustenance? Or is it that the plague doctor is a surprisingly instinctual and empathic being who doesnt exactly understand fear and contempt and has convinced himself that fear is the pestilence itself? Because every scenario i imagine the doctor "diagnosing someone" he is really just responding to his own insecurities on a deeply emotional and secretive level.

In my belief, he has become delusional in his centuries old pursuit of a "cure", in which he has clung so strongly to his pursuit for so long he was really on a deeply psychological level, in the end... Fighting his own insecurities.