Quite. It doesn't say "the word became published and widely available for home study", does it? The Incarnate Word is a person. If you make the Bible your god, you worship a created thing.
If scripture doesn't interpret scripture... who does?
Don't make the mistake of confusing the container for the thing contained. Scripture comes from the (God-inspired) Church, and is discerned by the Church -- not the other way round. Since the Church is the Body of Christ (as scripture itself says), in what sense can it be fallible?
It is without error, therefore, it CAN interpret itself.
Scripture itself contradicts this view. If you make scripture the foundation of your faith you might as well be a muslim.