Anachronisms regarding the Book of Mormon’s use of biblical material prompted Mormon scholars to reject the nineteenth-century notion that Joseph Smith produced from the plates a “literal” translation. Instead they have advanced the idea that the concepts flowed through Joseph’s mind and that he was left to express those concepts in the best language that he could command. Since Joseph, like many in his culture, was familiar with the Bible, Roberts suggested that it was only natural for him to use biblical phraseology in his translation.
https://www.youtube.com/watch?v=kTOWAgNDIDE&feature=youtu.be&ab_channel=DanVogel
https://youtu.be/v-jNV6jN-VQ
https://youtu.be/tP_nMHqILyE
https://youtu.be/qG0xgHx8ZxY
https://www.youtube.com/watch?v=aMPFKZ2E4MM

Dan Vogel discusses on Indian origins in the book of Mormon:

Early nineteenth-century Americans thus had available to them two seemingly contradictory traditions about the Indians and their ancestors. On the one hand, Indians were savages—at best lazy and slothful, at worst murderers and devil worshipers—entirely incapable of civilization. On the other, they were degenerate Jews who had every possibility of being restored to their former civilized condition. Those who cast the Indians as inherently “savage,” however, had to explain the existence of the earthen works in North America as well as the great stone buildings and temples of Mexico and Peru.

“the Indians have their tradition, that in the nation from which they originally came, all were of one colour.” The color, according to Smith, was “white,” as the Indians “have brought down a tradition, that their former ancestors, away in a distant region from which they came, were white.”

Vogel agrees the steel is an anachronism.