You wrote:
“Neoplatonism is only “Christian” if you define “Christian” as pagan. Augustine was a hard-core Neoplatonist.”
Neoplatonism is NOT what St. Augustine was baptized into, nor what he had an abiding and deep trust in for his sanctification and grace. St. Augustine was a baptized and believing Christians who loved and glorified God. No matter how much of “hardcore Neoplatonist” he was, it never effected his faith nor his practice of Christianity.
“The proof is not only his writings, but the fact that so many other Neoplatonists(Catholic and Protestant) revere him.”
No. I greatly respect St. Augustine for the following reasons: his tremendous faith, his great love of God, his wonderful story of conversion, his great works of apologetics against Manicheans, Donatists, and Arians. His philosophy never enters into it. Only scholars concern themselves with that.
Again, he was a Christian. He learned from St. Ambrose of Milan, believed in Christ, was baptized into Christianity, wrote extensively defending Christianity, and died a Christian. Those are the facts, and they are undeniable.