And round and round you go.
No, it's not obtuse at all: it is making the same point. Scripture has no "authority" for doctrine on its own - if it did there would be no need for doctrine referencing scripture, no need for doctrine at all.
Doctrine is made by men based on these men's interpretation of scripture, which they reference. Same scripture, same reference, different doctrine.
Here is the ELCA's Statement on Sexuality.
Same Lutheran foundation, same confessions and Book of Concord, same Scriptures. Very different doctrine.
The only difference that makes a difference in doctrine and practice is in who has authority to say so.
The same is true in your church. This is my same and only point.
You may go round and round in your position again now.
Only to a Catholic does basing doctrine on Scripture make no sense. I think we're done.