Hauerwas — How Real is America’s Christianity?

I've never been to America but Mohler seems to agree with this statement: AlbertMohler.com – Hauerwas — How Real is America’s Christianity?:

Americans do not have to believe in God, because they believe that it is a good thing simply to believe: all they need is a general belief in belief. That is why we have never been able to produce interesting atheists in the US. The god most Americans say they believe in is not interesting enough to deny, because it is only the god that has given them a country that ensures that they have the right to choose to believe in the god of their choosing. Accordingly, the only kind of atheism that counts in the US is that which calls into question the proposition that everyone has a right to life, liberty, and happiness.