Descrates redescribed the mind in epistemic terms and drew the boundary around the mental based on incorribility.
This assimilated what the ancients and scholastics never would have: conceptually articulated thoughts1 and raw feels.2
That’s a normative status: they have a unique role in social reasoning: social practices now are such that no one can override them. So we can change that (e.g. Freudian grounds or by developing cerebroscopes). Eliminative materials says: we brought Cartesian minds into existence (we really do have them) but we could change our practices and then there would be no Cartesian minds.