" It's only an "Ouch" if you believe Ignatius was correct. It's an "Oops" in all other cases"
Indeed! What do you suppose his teacher +John would have done to him if he were wrong? Its likely +John knew of his teachings. But there's no evidence that +John took any action against him. Of course, it was +John who reported of Christ:
"So Jesus said to them, "Truly, truly, I say to you, unless you eat the flesh of the Son of man and drink his blood, you have no life in you; he who eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day. For my flesh is food indeed, and my blood is drink indeed. He who eats my flesh and drinks my blood abides in me, and I in him. As the living Father sent me, and I live because of the Father, so he who eats me will live because of me."
You suppose that's where +Ignatius might have gotten his idea?
Ah, but if memory serves me correctly, these writings are not "inspired" writings. Do you believe that every idea that popped into the Apostle Paul, John or Peter's head apart from what the Church has stated to be inspired was a direct oracle from God? For that matter, would you say that Ignatius' writings are inspired? I believe the Church has taken the position that they were not.