I do not think there was any real disagreement but so often SS is misrepresented by those who oppose it.
As for “it provides for the church and its magisterium..,” it does just that, of pastors, teachers, etc, in the interdependence of the body and its gifts and offices, and in which bishops/elders refers to one office of leaders/overseers among brethren, (Mt. 23:8; Titus 2:15; Heb. 13:7) and not after the vast Roman bureaucracy and its most reverend Lord Archbishops, etc.
As re “foundational issue of authority,” i was speaking of Scripture versus an office of men being assuredly infallible and supreme.
Of course they do. Some confuse it with Solo Scriptura and some just obfuscate and inject a meaning that isn’t true.
>>one office of leaders/overseers among brethren<<
Nein! Severs of the brethren. Overseers of truth perhaps.
Luke 22:24 And there was also a strife among them, which of them should be accounted the greatest. 25 And he said unto them, The kings of the Gentiles exercise lordship over them; and they that exercise authority upon them are called benefactors. 26 But ye shall not be so: but he that is greatest among you, let him be as the younger; and he that is chief, as he that doth serve.