It is widely theorized that the advent of the “Anthropocene Age” (under this or any other name) is bringing one form of human temporality to an end while it initiates another (Simon 2021). Because human activity threatens the duration and well-being of the planetary biosphere, the new age that this activity is bringing on—though it is proving to be extremely difficult to define—does present specific onto-epistemological and moral challenges behind its political and social problems. The most prominent and perhaps the core of these challenges is the demand to shed anthropocentrism in human culture, a change that would deeply alter our personal and social ethics through ontology and temporality. The campaign for dis-anthropocentrization thus calls for a moral, scientific, social, and political challenge based on a change in ontology that affects our conceptions of knowledge, reality, and the relations of humankind to nature and of human beings to one another. I use the term rigid or thoroughgoing dis-anthropocentrization for the purest form of rigorous anti-anthropocentrism based philosophical analysis of the fundamental ontology of history and society.