Given time Augustine would have seen what this false teaching of Mary has done to the Church.
Harley, Harley, Harley.
Do you really know so little of St. Augustine? He called for greater veneration of the Virgin Mary for the Church faithful. And we have over 100 panegyrics written by him for the saints.
It is rather sad that the education of our Protestant brethren does not extend beyond the immediate past. I’d really like you guys to be able to understand the Church and its development.
That's avoiding my point. You said the church lapsed into heresy after Augustine. But Marian devotion absolutely preceded Augustine, and was certainly practiced by him.
Either Marian devotion is not heresy, or both Augustine and his church were heretical. Pick one.