Is that a fair representation of the two views?
The “sin” which humanity inherits from Adam & Eve is not the act itself but a
state of being, a fallen state of being. It’s sometimes referred to as the “death of the soul” (Adam & Even died the moment they disobeyed God because creation cannot remain whole, with its created innocence and integrity and true nature intact, in a state which is out of sync with the will of its Creator, the Source of its life), and this is the reason man must be “born again”. So the essence of this fallen state is simply spiritual dissociation from God, an anomaly in His creation, a
sin. According to church teachings, with that sin man become disconnected in some manner from God, from his fellow man, from the rest of creation, and even from
himself. The basis of that sin, that disconnection, is pride, to think oneself equal to or greater than God, which effectively eliminates God from one’s awareness, from one’s
belief, which is why being born again is initiated by
faith, restored faith where man is reconciled with God and enters a communion with Him that we were made for.
Pride makes us
less than who we are, while aspiring to be greater, all because pride, by its nature, rejects the
truth of who we are, as being inferior to its lofty underlying standards: the desire to be God. Anyway, pride is sort of the grandaddy of all other sins, and human self-righteousness (as opposed to God-righteousness) has been the rule in this brave new world exiled from Him ever since. That pride or self-righteousness opens the door to any and all other sins as it means that man becomes his own “god”, justifying anything that seems right in his own eyes at the moment. Humility supports faith, hope, and love, while pride opposes those virtues, and therefore opposes God.
While the ancient churches believed that man was weakened and wounded by the fall, and that something was now
missing, i.e. God, in man’s life, resulting in lack of the justice or righteousness in himself that would guarantee self-control, the Reformers had a somewhat different view, that original sin consisted of the
addition of something, a “sin nature” which would more or less mean that man was now a different sort of being than he was created to be and in any case would have no means to desire anything other than sin whatsoever, painting a bleaker picture of man’s fallen state. Both the eastern and western ancient churches teach that the state of original sin gives man a
tendency to sin, an attraction to disordered desire, sometimes called “concupiscence”.
The eastern concept of Ancestral sin, from my understanding, isn’t really much different from the concept of OS in the west. Because man is dead, lost, cut off from his Creator, then disorder/sin reigns, where death, the threat of annihilation, is the only future naturally in sight.
Anyway, the following are some of the Catholic teachings on this matter.
403 Following St. Paul, the Church has always taught that the overwhelming misery which oppresses men and their inclination towards evil and death cannot be understood apart from their connection with Adam's sin and the fact that he has transmitted to us a sin with which we are all born afflicted, a sin which is the "death of the soul".291 Because of this certainty of faith, the Church baptizes for the remission of sins even tiny infants who have not committed personal sin.
It is a sin which will be transmitted by propagation to all mankind, that is, by the transmission of a human nature deprived of original holiness and justice. And that is why original sin is called "sin" only in an analogical sense: it is a sin "contracted" and not "committed" - a state and not an act.
405 Although it is proper to each individual,295 original sin does not have the character of a personal fault in any of Adam's descendants. It is a deprivation of original holiness and justice, but human nature has not been totally corrupted: it is wounded in the natural powers proper to it, subject to ignorance, suffering and the dominion of death, and inclined to sin - an inclination to evil that is called "concupiscence". Baptism, by imparting the life of Christ's grace, erases original sin and turns a man back towards God, but the consequences for nature, weakened and inclined to evil, persist in man and summon him to spiritual battle.