Matthew Roper addresses various arguments raised against the Book of Mormon in chapter 5 of Mormonism: Shadow or Reality? by the Tanners.
Matthew Roper, "Jerald Tanner and Sandra tanner, Mormonism: Shadow or Reality?" Review of Books on the Book of Mormon 4, no. 1 (1992): 169-215
[conclusion]
It seems to me that, when all is considered, the Tanners' case against the Book of Mormon is far from compelling, leaving too many significant elements unexplained. The most significant of these is certainly its spiritual witness of the truth. "The Book of Mormon" wrote B. H. Roberts, "so long as the truth respecting it is unbelieved, will remain to the world an enigma, a veritable literary sphinx, challenging the inquiry and speculations of the learned. But to those who in simple faith will accept it for what it is, a revelation from God, it will minister spiritual consolation, and by its plainness and truth draw men into closer communion with God." Sensitive souls have always been able to discern what is worthy of belief and devotion (Moroni 10:3-5). The Tanners provide a faithless view of the Book of Mormon for their fellow critics to feast upon but, as Isaiah pointed out (Isaiah 29:7·8), such food will always leave the eater empty when made of shadows and not reality.