Christians test all things through the scriptures.
The traditions of men are purely humanist and sinful.
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What was the purpose of the apostles? To teach scriptures? Write Scriptures? To hand down the Lords messages? Could only those messages have been in writing form?
They wrote, taught, and were inspired by the Holy Spirit. Do you believe that only the written guidance of God are true inspiration or were their acts also guided by the Holy Spirit?
I believe God, Jesus left much more than some selective written words, IE “Traditions”. To believe he only left limited written words seams odd to assume. Does the Bible say it is everything? Where in the bible say these are the books of the bible and that is all?