B.H. Roberts affirms in 1926 that he thinks BOM objections can eventually be answered.
B. H. Roberts, New Witnesses for God, II. The Book of Mormon. In Three Volumes, 2nd ed. (Salt Lake City, UT: 1926), 3: 558–559
And now a final word as to these objections. Are all the objections to the Book of Mormon satisfactorily answered? Are all difficulties which they represent removed? Frankly, no; they are not. Every one must feel that. But, on the other hand, do these objections that are not entirely and satisfactorily answered constitute an insuperable difficulty in the way of a rational faith in the Book of Mormon? My answer is, they do not. Nor does incompleteness of evidence on any particular point necessarily mean error as to the general result of the evidence. But a little more time, a little more research, a little more certain knowledge, which such research will bring forth, will undoubtedly result in the ascertainment of facts that will supply the data necessary for a complete and satisfactory solution of all the difficulties which objectors now emphasize, and on which they claim a verdict against the Book of Mormon.