The dogmatic issue was settled at Trent, which decreed that the bishops where successors of the apostles. These scholars wanted to use the vocabulary and categories of scholastic theology as normative for Catholic dogmatics. My opponent cannot cite a single orthodox theologian who claimed that scripture could be ignored. Indeed, the scholastics quote scripture extensively. Furthermore, the issue here is not dogmatic, but a practical one of deciding the proper weight of scriptural, patristic, and scholastic language and method.
Infallibility only extends to dogmatic questions.
In closing I simply reiterate that to be infallible, a statement must be definitive, and Pope Paul VI stated that nothing in VCII was definitive.