So i will also ask you the same question as to the polemic behind this assertion:
Are you saying that the Divine promises of His presence and preservation, (Jn. 14:16; 16:13) necessitate an infallible church, and that being the historical instruments and stewards of Scripture means they are the infallible interpreters of it ["we gave you the Bible so.."], so that dissent from them is rebellion against God?
It is the Word that is infallible, not the mortal men who God has used to preserve His Word. Peter himself made gross errors, Jesus said he was directed by Satan, Paul rebuked him to his face. (No, I do not subscibe to the belief that Peter was the first pope).
I will not be drawn into the sophistry that the Word being infallible necessitates the (sometimes self appointed) guardians of the Word themselves be infallible. God is infallible, His Word is infallible - and He is fully able to keep His Word.
He used Balaam’s ass to accomplish His will; He is certainly able to use fallible men to preserve His Word.
It is God who is preserving the scriptures and His church.