Not mutually exclusive things.
If you think that the early church fathers decided without the authority of God which were canoncial books and which were not you are mistaken.
It's amusing how off you are. That's not what we think. We think the Church is the instrument God used to make the canonical determination. Which makes your citing of the Church having no authority to add to Scripture nonsense.
SD
Rev. 22:18, 19
18I warn everyone who hears the words of the prophecy of this book: If anyone adds anything to them, God will add to him the plagues described in this book. 19And if anyone takes words away from this book of prophecy, God will take away from him his share in the tree of life and in the holy city, which are described in this book.
Deuteronomy 4:2
2 Do not add to what I command you and do not subtract from it, but keep the commands of the LORD your God that I give you.
Jude 1:3
3Dear friends, although I was very eager to write to you about the salvation we share, I felt I had to write and urge you to contend for the faith that was once for all entrusted to the saints.
I have no problem with the canonization as Jerome determined canon to be. In line with the Protestant view, he also disparages the additions to Daniel and Esther, in the prefaces to those books. He also referred to them as "apocryphal" and stated they are (to be) read in the church, but not to be cited for proof texts of doctrine.
Christ Himself attests to the canon of the Old Testament:
Matthew 23:35
35And so upon you will come all the righteous blood that has been shed on earth, from the blood of righteous Abel to the blood of Zechariah son of Berekiah, whom you murdered between the temple and the altar.
He is saying from the first martyr in the first book of the Old Testament to the blood of Zechariah in the last Book of the Old Testament. The death of Zechariah was told to us in II Chronicles 24:20-24. II Chronicles is the last book of the Jewish TaNaKh or Scriptures. The Hebrew Bible, though identical in content to the Protestant Old Testament, is not in the same order as Protestant or Catholic Bibles. The word of God was committed originally to the Jews. As the designated custodians of the inspired word of God, they knew which books were canonical, and which were not, and they knew this without the assistance of the yet to appear Catholic Church.