Apples and oranges. The Catholic Church does not have as its ultimate authority a written work. It has a living Magisterium due to apostolic succession. Jesus never commanded a word be written. He commanded his followers to "preach" and "teach," but nowhere does it say "go therefore into all the world and WRITE."IN THE SAME WAY
do you believe the accessibility of the Catholic Church and its writings affects its authority?
Native Americans in 400AD did not have access to the Catholic Church and its writings:
do you believe that diminished the authority of the Catholic Church?
If I cannot read and ask you what the bible says, how can I be sure you are not lying to me or simply misinformed? And why should I trust you not to lie?