Sounds quite Mormon.
They, too, insist that the STH was good enough BEFORE J.Smith, but NOW it needs updating by the Book of Mormon, and Doctrines&Covenants, and the Pearl of Great Price.
Somehow I doubt “Mormon” had much to do with the subject.
It isn’t called the Church of Jesus Christ for nothing, and isn’t it just a coincidence that it legally resides in the hands of those who were driven out of the United States, carrying the US flag and with the permission of the US Government.
Nevertheless that does not change the fact that the Bible was and is the word of God, and that “Church” uses the KJV as the accepted version.