I suppose this comes down to whether or not one has a text-based faith or not; the teachings of Christianity preceded the inspired writing of the NT, and Christianity received the OT primarily as the LXX (which includes both proto-canon and deuterocanon).
That the Holy Scriptures are the crown of what was received is undisputed I would think across Christianity; that the Holy Scriptures were part of what was received is the view of the earliest Christians (as, indisputably, they had no NT). The holding as a precious deposit what was received is a responsibility.
The (modern) view of a culture heavily marked by literacy is certainly demonstrated in threads disputing the references in the NT of the deuterocanon (which here also utilizes a selective, ie inconsistent, application of the claimed standard regarding its own shorter canon) literate cultures tend to require a form of citation that is unlike mixed-literate and pre-literate cultures. (And literate cultures may miss that even citations that conform to their standards are meant in a different way in mixed-and-pre-literate cultures, where the citation is not a 'stand-alone quote, but often meant to bring the entire context of the quote to mind, not just the quoted line; so, for example, where a Psalm is quoted it is the entire Psalm that is "meant" by the quote.)