Max Tegmark is not an eliminativist. Instead, his philosophical and scientific stance aligns with reductive physicalism and mathematical monism, particularly regarding his views on consciousness. [1, 2]

While both perspectives reject supernatural explanations, they differ fundamentally on the reality of human experience:

Feature	Eliminativism (e.g., Paul & Patricia Churchland)	Max Tegmark's Physicalism
Status of Consciousness	Denies the existence of certain subjective mental states (like qualia or beliefs), viewing them as "folk psychology" illusions to be replaced by neuroscience.	Affirms that consciousness is real, defining it as an emergent, physical state of matter ("perceptronium").
Core View	"Subjective mental states do not actually exist."	"Consciousness is the way information feels when being processed in complex ways."
The Universe	Materialistic; focused on physical biology and neuroscience.	Mathematical Universe Hypothesis; physical reality is mathematical structure.

Why Tegmark is not an Eliminativist

He treats consciousness as real: Eliminativists argue that our standard concepts of mental states will eventually be eliminated by a mature science of the brain. In contrast, Tegmark treats consciousness as an objective, measurable physical property. He considers it an emergent phenomenon—much like how a liquid state emerges from the arrangement of atoms—rather than a falsehood to be discarded. [1, 2, 3, 4, 5, 6]
He emphasizes cosmic meaning through observers: Tegmark has explicitly argued that consciousness is what gives the universe meaning. He asserts that without conscious observers to experience it, our universe would be a meaningless waste of space. True eliminativists generally reject this framing as a byproduct of flawed "folk" reasoning. [1, 2, 3, 4]

If you are exploring his worldview, I can provide more details on his Mathematical Universe Hypothesis or explain how his perceptronium theory builds on Integrated Information Theory (IIT).