You read other stuff from that website, like this http://atoday.org/god-create-evolution.html or that http://atoday.org/wilson-ii-president-adventist-general-conf..., and suddenly you are unsure if you are dealing with trolls or kooks.
With a lengthy incubation time, and in an area that's just emerging from several decades of civil war quarantine isn't going to happen. The best hope is that there will soon be a vaccine, preferably before the plague reaches Calcutta, Karachi, Jakarta or Johannesburg. It's not unrealistic, the virus mutates only slowly, and India did get on top of smallpox; there is historical precedent for this approach to work.
Quarantine has never been successful during wartime. The Attic plague happened in the middle of a war.
Also, It's not the western cultural mindset to let it "burn out" when they could go in and "save" each person...
Regardless of your feelings about the rest of the site, I do not think the doctor's points are in any way invalidated if you actually read what he has to say, as some others here have already pointed out.
Yes, if the beliefs are different enough in ways that the person cannot possibly justify.