In the 1990s "Object-Oriented Ontology" was introduced by Graham Harman [1]. The name was borrowed from computing, but its meaning has little or nothing to do with Simula or Smalltalk.
The OOO/"Speculative Realism" crowd are loony charlatans who make the current post-modern neo marxist politburo who runs the humanities parts of academia look downright sane.
My response to unironic OOO believers is that we must wage war on objects: