Questions about postmodernism

Hello Rabbi Avraham,

Sorry to bother you on the eve of the holiday, but I have some questions.

In his book “Tablets and Fragments of Tablets,” Rabbi Shagar speaks of ‘hard’ and ‘soft’ postmodernism – two types, the first of which nullifies everything, and “the second does not deny the existence of truth and goodness” (page 17 of the book).

1. Where does this distinction come from? Is it familiar, or is it his invention?

2. Why would the “soft” postmodernists “give in” to him and make his life comfortable by leaving some of the issues as accepted, for example – the existence of God?

Is there such a school of thought that started their revolution but left God out of the picture?

Thanks in advance and Happy Holidays,