Coulter is famous for her acerbic wit. That's her thing. Try reading past that and get to the meat of what she's saying, and she said it brilliantly.
Why are Christian missionaries helping people around the world, who are being destroyed by their own leaders, when they can do so much good by simply going into the inner-cities or feeding the homeless?
It's not a question of "calling." It's a question of plain-old common-sense.
Have you ever read the Bible? Nothing you have posted here would indicate the answer is yes.
If the answer is no, then you shouldn’t even be on this topic.