"Actually, they were all shamanizing against authenticity, which they experienced as a kind of gaslighting." Can you expand a bit on what you mean by that?
Maybe in another video...but they were rebelling against the way that the prevailing ideology of their time mitigated against their own sense of a broader and more complex reality. Nietzsche thought that religion contradicted his sense of meaning & value, and above all, his intellectual struggle. Bataille thought it was the bourgeois (middle class, capitalist) ideology, and Marechera felt it was colonialism.