This paper introduces the concept of “Metaphysical Singularity” to describe a historical transition in the social function of metaphysical systems. Drawing on cognitive anthropology, sociology, and philosophy, the paper argues that metaphysical frameworks historically enabled large-scale social cohesion by extending cooperation beyond biological tribal limits. However, under conditions of modern hyperplurality, hyperconnectivity, and fragmented epistemic authority, these same systems increasingly generate polarization and identity fragmentation rather than civilizational integration. Engaging with the works of Ara Norenzayan, Robin Dunbar, and Émile Durkheim, the paper proposes a structural analysis of how changing informational and cultural environments transform the integrative capacity of metaphysical systems in contemporary societies.