Trying to move this conversation back to the topic of private property and away from the straw-man of State Marxism. This is truly an example of Marx's genius:
"Proletariat and wealth are opposites; as such they form a single whole. They are both creations of the world of private property. The question is exactly what place each occupies in the antithesis. It is not sufficient to declare them two sides of a single whole.
"Private property as private property, as wealth, is compelled to maintain itself, and thereby its opposite, the proletariat, in existence. That is the positive side of the antithesis, self-satisfied private property.
"The proletariat, on the contrary, is compelled as proletariat to abolish itself and thereby its opposite, private property, which determines its existence, and which makes it proletariat. It is the negative side of the antithesis, its restlessness within its very self, dissolved and self-dissolving private property.
"The propertied class and the class of the proletariat present the same human self-estrangement.
But the former class feels at ease and strengthened in this self-estrangement, it recognizes estrangement as its own power and has in it the semblance of a human existence. The class of the proletariat feels annihilated in estrangement; it sees in it its own powerlessness and the reality of an inhuman existence. It is, to use an expression of Hegel, in its abasement the indignation at that abasement, an indignation to which it is necessarily driven by the contradiction between its human nature and its condition of life, which is the outright, resolute and comprehensive negation of that nature.
"Within this antithesis the private property-owner is therefore the conservative side, the proletarian the destructive side. From the former arises the action of preserving the antithesis, from the latter the action of annihilating it.
"Indeed private property drives itself in its economic movement towards its own dissolution, but only through a development which does not depend on it, which is unconscious and which takes place against the will of private property by the very nature of things, only inasmuch as it produces the proletariat as proletariat, poverty which is conscious of its spiritual and physical poverty, dehumanization which is conscious of its dehumanization, and therefore self-abolishing.
The proletariat executes the sentence that private property pronounces on itself by producing the proletariat, just as it executes the sentence that wage-labour pronounces on itself by producing wealth for others and poverty for itself. When the proletariat is victorious, it by no means becomes the absolute side of society, for it is victorious only by abolishing itself and its opposite. Then the proletariat disappears as well as the opposite which determines it, private property.
"When socialist writers ascribe this world-historic role to the proletariat, it is not at all, as Critical Criticism pretends to believe, because they regard the proletarians as gods. Rather the contrary. Since in the fully-formed proletariat the abstraction of all humanity, even of the semblance of humanity, is practically complete; since the conditions of life of the proletariat sum up all the conditions of life of society today in their most inhuman form; since man has lost himself in the proletariat, yet at the same time has not only gained theoretical consciousness of that loss, but through urgent, no longer removable, no longer disguisable, absolutely imperative need — the practical expression of necessity —
is driven directly to revolt against this inhumanity, it follows that the proletariat can and must emancipate itself. But it cannot emancipate itself without abolishing the conditions of its own life. It cannot abolish the conditions of its own life without abolishing all the inhuman conditions of life of society today which are summed up in its own situation. Not in vain does it go through the stern but steeling school of labour.
It is not a question of what this or that proletarian, or even the whole proletariat, at the moment regards as its aim. It is a question of what the proletariat is, and what, in accordance with this being, it will historically be compelled to do. Its aim and historical action is visibly and irrevocably foreshadowed in its own life situation as well as in the whole organization of bourgeois society today."
Marx, The Holy Family, Chapter IV “Critical Criticism” As the Tranquillity of Knowledge, Or “Critical Criticism” As Herr Edgar
https://www.marxists.org/archive/marx/works/1845/holy-family/ch04.htm#4.4
What Marx has stated here is truly heartbreaking. He did not invent the proletariat class, it is a symptom of the capitalist organization of society. And as a symptom it imposes restrictions and limitations on that class.
What is most interesting is when Marx says,
"When socialist writers ascribe this world-historic role to the proletariat, it is not at all, as Critical Criticism pretends to believe, because they regard the proletarians as gods. Rather the contrary."
This class is not an elite class, Marx recognizes it because the social and economic conditions under which it is forced to live and develop impoverishes its quality and potential. He says this class must negate itself not proliferate itself. This is almost too much to bear.
"It is not a question of what this or that proletarian, or even the whole proletariat, at the moment regards as its aim. It is a question of what the proletariat is, and what, in accordance with this being, it will historically be compelled to do."
This is so damn tragic upon reading it I nearly cried.