That’s the point. Determinism, and the philosophical constructs used to frame it, Total inability, Unconditional election and Irresistible grace leading to doctrines of Limited atonement and denying free will where not only not believed by the Early Church Fathers but were considered heresy.
Specifically, the video explains that none, zero of the Early Church Fathers accepted these doctrines which denied freedom of the will which originated with the Gnostics and Stoics where Augustine came to understand them through Manicheanism teachings.
Augustine’s views changed due to conflicts and were widely rejected, he went back and revised his prior views to conform to Determinism to line up with his Manicheanism and Gnosticism roots which influenced his position for 10 years after conflict arose over infant baptism wherein, he came up with the necessity of baptismal regeneration of infants because he believed as the Manicheans that babies where born in guilt and damnable sin, which was a different added in view of original sin than had ever been a part of Christianity before that time.
That view of original sin, that man is responsible for the guilt while being unable to respond for lack of Free Will/Human Volition but still culpable for the sins came directly out of the Manicheanism doctrines of all things physical being evil and were never a part of Christianity, until Augustine by means of Determinism.
