One thing I don’t understand, as an aside, is why some Protestants feel the need to function outside the theological excellence and consistency of Anglicanism and Lutheranism (which are the the two largest Protestant traditions, and the third and fourth largest after Eastern Orthodoxy and Roman Catholicism; Calvinism and Reformed Protestantism is in fifth place in terms of size(. As I see it, Lutheranism of the evangelical catholic variety and high church Anglicanism represent a proportionate response to the excesses of the 16th century Roman church while retaining enough commonality with the Early Church and what early Calvinists liked to call the consensus patrum so as to facilitate ecumenical reconciliation with the Eastern and Oriental Orthodox and the Church of the East.
But when one goes beyond that into some of the more radical Protestant denominations, there seems to be a shift in focus from mere reform of certain Roman errors to discarding anything deemed even remotely “Catholic”, and this approach is logically fallacious, in that it assumes that because Roman Catholics believe x and practice y, x and y must be in error. We see the most extreme example of this in the SDA and the Landmark Baptists seeking to claim various heretical sects like the Albigensians, Paulicans, Bogomils, Montanists and others as proto-Protestants, despite there being theologically almost nothing in common, and the actual beliefs of these early sects being rather frightful to all Christians who research them in earnest (for example, the Paulican Book of Keys, fragments of which survive, is beyond off-putting).