Sorry, but I'm gonna do the thing:
Have ya'll even read Marx?
https://en.wikipedia.org/wiki/Marx%27s_theory_of_alienation
Karl Marx's theory of alienation describes the separation and estrangement of people from their work, their wider world, their human nature, and their selves.
Alienation is a consequence of the division of labour in a capitalist society, wherein a human being's life is lived as a mechanistic part of a social class.
Attempting to translate into more modern parlance:
Capitalism gaslights you so hard, so consistently, so utterly and totally, in every single aspect of your life, that it functionally gives you, a worker, a pleb, a persistent trauma complex that causes you to inherently devalue and dissociate from yourself.
Or perhaps more succintly:
Capitalism gives cPTSD to everyone it exploits, which is also often so thorough and normalized that many never even realize this is the case.