Mary didn’t proclaim this stuff about herself. It was written about her. Joe Smith claimed this shit happened to him, just 200 years ago. That is a massive difference. The Book of Mormon is laughable. From Wiki; the only thing missing from Smith’s gospel is ancient wormholes to transport Jews to the New World 2600 years ago:
According to Joseph Smith, in 1823, when he was seventeen years old, an angel of God named Moroniappeared to him and said that a collection of ancient writings was buried in a nearby hill in present-day Wayne County, New York, engraved on golden plates by ancient prophets.[17][18] The writings were said to describe a people whom God had led from Jerusalem to the Western hemisphere 600 years before Jesus's birth.[14] Smith said this vision occurred on the evening of September 21, 1823, and that on the following day, via divine guidance, he located the burial location of the plates on this hill and was instructed by Moroni to meet him at the same hill on September 22 of the following year to receive further instructions, which repeated annually for the next three years.[19][20]Smith told his entire immediate family about this angelic encounter by the next night, and his brother William reported that the family "believed all he [Joseph Smith] said" about the angel and plates.