You cannot say the process of declaring the Canon was fallible and at the same time say that God guided us to be able to rely on His Written Word. Its a contradiction.
Protestants try desperately to avoid this dilemma.
Its unrealistic to imagine a Pope just sitting on a throne giving out orders, as if thats wat the Pope was able to do. The bishop of Rome sits on a seat of honor among Bishops, in regard to Universal Teaching. So if the Bishops of the world wish to settle a matter Universally, then the Bishop of Rome needs to affirm. It may take alot of convincing. It may not happen for many Popes.
What puzzles me, is that Protestants expect Scripture to be the supreme rule of faith, and all tradition and Church judgment subject to failure, but admit that an ecumenical council has NEVER confirmed what is to be trusted as Scripture!
This would be very problematic for me to accept.
And the attempt to place Scripture above Sacred Tradition and Church Teaching does not diminish the veneration we hold Scripture with. It just means Protestants diminish what made it possible to have your our trusty Bible. And i agree that God’s sovereignty provides us with Scripture, Tradition and Magisterium!