They ultimately did say they did believe in an age of accountability, which would require an age of "unaccountability" for children, up to a certain point.
The idea of "an age of accountability" is not exactly what the Orthodox Church teaches. There is most certainly an age at which a baptized young person becomes aware of himself as a Christian and embraces on his own the commitments made on his behalf by his parents and godparents. But the intricacies of legal accountability and guilt that are inherent in the western doctrine of the "age of accountability" have no place in Orthodoxy.
St Theophan the Recluse in his work "The Path to Salvation" explains this concept in a fairly clear manner:
...through Baptism the seed of life in Christ is placed in the infant and exists in him; but it is as though it did not exist: it acts as an educating power in him. Spiritual life, conceived by the grace of Baptism in the infant, becomes the property of the man and is manifest in its complete form in accordance not only with grace, but also with the character of the rational creature, from the time when he, coming to awareness, by his own free will dedicates himself to God and appropriates to himself the power of grace in himself by receiving it with desire, joy, and gratitude. Up to this time, also, the true Christian life is active in him, but it is as if without his knowledge; it acts in him, but it is as if it is not yet his own. But from the minute of his awareness and choosing, it becomes his own, not by grace only but also by freedom.
It goes without saying that after the Baptism of the infant a very important matter stands before the parents and the sponsors: how to lead the baptized one so that when he comes to awareness he might recognize the grace-given powers within himself and accept them with a joyful desire, together with the obligations and way of life which they demand. This places one face to face with the question of Christian upbringing, or the upbringing which is in accordance with the demands of the grace of Baptism, and has as its aim the preservation of this grace.
One cannot define just when a person comes to the awareness of himself as being a Christian and to the independent resolve to live in a Christian way. In actual fact this happens at different times: at the age of seven, ten, fifteen, or later. ...
I encourage you to read the entire book to get a more complete grasp of his teaching about the development of the Christian soul.
Fr David Moser