Think about what Wilson says:
If Jesus didn't come back from the dead, then Christianity is appalling. It's an appalling fraud and a delusion, and every unbeliever ought to attack it.
If it's not objectively true, then I don't have any more use for it than Christopher does.
The beliefs and practices of Christianity are appalling based on strictly human judgement. He admits this. But because Jesus is the Son of God, the Bible supersedes our reasoning.
For anyone who believes that religion is good for the world even if god doesn't exist, this is what religion can do. It can cause an otherwise rational person (which Pastor Wilson appears to be), who knows that their belief system is morally repugnant under the microscope of rational thought, to follow it anyway, all because of a 2000 year old book of mythology.