Problem-posing education does not and cannot serve the interests of the oppressor. No oppressive order could permit the oppressed to begin to question: Why?
Indeed, the interests of the oppressors lie in “changing the consciousness of the oppressed, not the situation which oppresses them”; for the more the oppressed can be led to adapt to that situation, the more easily they can be dominated.
Implicit in the banking concept [of education] is the assumption of a dichotomy between human beings and the world: a person is merely in the world, not with the world or with others…In this view, the person is not a conscious being (corpo consciente); he or she is rather the possessor of a consciousness: an empty “mind” passively open to the reception of deposits of reality from the world outside.
https://envs.ucsc.edu/internships/internship-readings/freire-pedagogy-of-the-oppressed.pdf
I'm definitely a nature/nurture combo believer, you can certainly create an environment for someone to become a leftist but ultimately it is up to them to wield what they have learned for the benefit of all. Agreed that we have to create an environment that allows that and without leftist parents then an important area of that environment will be lacking