I would even go further to say, if we are responsible for our sins alone and not anyone else’s sin, then young ones are innocent until they sin, until they know good and evil.
The Bible says that the angels always behold the face of the Father for the little ones.
We are not blamed for anyone's sins, and the sin of Adam and Eve does not affect us for that is their sin not our sin.
Adam and Eve were created knowing God and having a relationship with Him, but when they sinned it gave them a choice between good and evil and they would have to choose between the two.
So all their offspring are born with a choice, so they are born not knowing God so they will sin before they repent and follow God.
But Adam and Eve's sin does not come upon them so they are innocent until they sin knowing good from evil.
The Bible says all have sinned, done the act, and come short of the glory of God, not we are born with sin already attached to us for that comes later when we do the act, and the angels protect the little ones spiritually until they come to the time of accountability and sin affecting them for then it is up to them to correct it.
It is that choice thing from Adam and Eve that causes us to be born not knowing God, not the sin that they did that affects us, although it was because of their sin that gave their offspring a choice.