The evangelical supporters of the bullshitter are crazy religious fanatics. The author's conversation with his mother illustrates that point.

In their fervency, they overlook the fact that their scriptures do not say that the hoped-for second coming will occur in the next century or even the next millennium. That is an arbitrary addition to their religion. Perhaps they would conclude that preserving everything the Earth's ecosphere is consistent with their religion if they are hammered on that one point.