I thought all you needed was Scripture and had no need of any other input, guidance or advice. At least Catholics have a teaching authority to consult.
I can't think of anytime that I have said such a thing. Do you have an example? I DID go to a Bible college and worked my way through cramming four years into five and a half. And there were plenty of guiders, councilors, advisers, teachers and pastors. I learned quite a bit about quite a lot. So I cannot imagine why you could say I had no need of a teaching "authority". I was also taught to study the Bible and learn discernment so that what I was taught could be confirmed by the authority of God's word. Perhaps you have someone else in mind?