If you are referring to the Catholic and Orthodox insistence on the adherence to apostolic Tradition, I would say you are incorrect.
Apostolic Tradition protects the interpretation of the scriptures from error through the power of the Holy Spirit. I’m amazed how much more Catholics and the Eastern Orthodox have retained in common over the past 2,000 years.
They have far more in common doctrinally than say Lutherans and Baptists who both believe in Sola Scriptura, yet disagree on more than they agree on — Baptism, Holy Communion, private confession, the nature of the ministry, etc.
Protestants used to draw and quarter Catholics in England in the 16th and 17th centuries. I might remind you of the great service of the Puritans, so there’s enough finger-pointing to go around.
However, we Christians share a common definition of faith, encapsulated in the Nicene Creed. Since we share that, we are brethren in Christ, Lord, God and Savior, part of the Triune Godhead with the Father and the Holy Spirit.
Whatever else we may disagree with, we share that. With some like the Orthodox, Catholics - these are lungs of the same organism. With others it can be brothers or cousins in faith.
however, to stick to the theme of this particular thread, Mormonism is a separate, distinct religion.
If they wish to believe whatever they wish to believe, so be it, it is their free will to do so.
however, to say that Jesus is just one God of many is not Christian as it rejects the concept of ONE God, hence they are not Christian.