trinity is catholic apostasy
Jesus and the father are one
If Trinity is Apostasy, then according to you, Baptists, Amish, Mennonites, Lutherans, Anglicans, Reformed, Brethren of Christ, Seventh Day Adventists, Churches of God General Conference, Roman Catholics, Orthodox, Pentecostalism, United Methodists, many non-denominationals, and many others are all not Christians. That would leave the Christian population of the world somewhere under 100 million out of the 7 billion people on the Earth. Trinity has been accepted by many Christian Churches since the second century, and became official doctrine in the 3rd and 4th centuries.
Unitarianism is held as apostasy. Duologism, meaning two, the Father and Son alone, has been held as straight apostasy. Modalism, Arianism, and Partialism have all been held as heresy that means that one cannot commune with the denominations stated above, however, none say that those who hold these heresies are lost to Christ.