Like most all of the French educational system the ENIT is following the tradition of the Encyclopédistes which focus on breadth rather than depth.
Many of the most influential philosophers of that time, like the Encyclopédistes, Voltaire or Reimarus, were secularists or promoted a deist view: In a nutshell, they proclaimed that nature was the only revelation God has ever made and thus the preoccupation with any other alleged revelation was superfluous.
From 1750–1777, Madame Geoffrin played host to many of the most influential Philosophes and Encyclopédistes of her time.