Ad hominems are standard Mormon dodges; you'll pardon me for not being diverted.
The Book of Mormon may call itself anything it likes. I can call myself a young man with a head full of hair; won't make me one.
Mormonism and the Bible cannot be true at the same time. There cannot be only one true God, and many true Gods, at the same time just to pick one unbridgeable chasm between the religions.
Again, to be a Christian is to believe in absolutes, because Jesus taught them, affirmed them, insisted on them.