To be clear, Protestants do not regard “majority depth” as insignificant or unimportant. On the contrary, it is a behemoth, a force to be reckoned with. But they do maintain that what is finally decisive is the original teaching of the apostles, and that there are practices and beliefs that occasionally become mainstream despite departing from apostolic teaching.
The problem here is that all sides claim the correct interpretation of the apostolic teaching.
