With reference to which particular we are not acting irregularly, if from the books, though not Canonical, yet brought out for the edifying of the Church, we bring forward testimony.
It is true that many church fathers believed the “Apocrypha” to be canonical. It is also true that many did not. Further, in the West up until the late middle ages, theologians were still wrestling over which books were “canonical” or if the very concept of a canon was even helpful. Understanding that, perhaps we can cut Luther a little slack. Sure, he supposedly “took away” some books, but given the current Western debate over the extent of the canon, many mainline doctors of the church were doing that.