I’m not sure that’s true. There is a certain strand in postmodernist/critical thought that, by consistently seeking to unmask power, recovers the perennial, “religious” questions. Some examples might include Horkheimer’s later works, Simone Weil, or Habermas, who famously had an encounter with Pope Benedict XVI (then, Joseph Cardinal Ratzinger) that caused him to reevaluate a lot of his views towards religious thought. I think Aquinas is also pretty accessible to the dedicated novice. Maybe you mean positivist instead of postmodernist? In that case, yeah, I’d agree.