Having read Nietzsche is a requirement for understanding what JP is saying.
But his and Camilla's insistence on the high value of religion over 'atheism' is stupid. I understand their point but saying religion should take over is very weird. N was right that science and rationalism undermine religion fatally, there is no going back into religion.
Beyond good and evil, that is the logic of the world now. JP and Camilla need to catch up with this, so far they are still far too moraistic. At bottom the world is not moral.