And still be considered by the CC as a church father? Wow!
Before he apostatized. That’s why he’s not referred to as a saint. The same goes with Origen.
Some of what he said was valid and others not so much.
But no single father can be taken in isolation from the broader consensus of the fathers.
I might point out that Luther and the Reformers held the fathers in esteem.
Luther and Calvin both believed that Mary was the Mother of God. Luther even believed in the Immaculate Conception.