None of that has any bearing on the truthfulness of the teachings and principles contained within.
Yeah right, like this one,
Helaman 13:17 And behold, a curse shall come upon the land, saith the Lord of Hosts, because of the peoples’ sake who are upon the land, yea, because of their wickedness and their abominations.
18 And it shall come to pass, saith the Lord of Hosts, yea, our great and true God, that whoso shall hide up treasures in the earth shall find them again no more, because of the great curse of the land, save he be a righteous man and shall hide it up unto the Lord.
19 For I will, saith the Lord, that they shall hide up their treasures unto me; and cursed be they who hide not up their treasures unto me; for none hideth up their treasures unto me save it be the righteous; and he that hideth not up his treasures unto me, cursed is he, and also the treasure, and none shall redeem it because of the curse of the land.
20 And the day shall come that they shall hide up their treasures, because they have set their hearts upon riches; and because they have set their hearts upon their riches, and will hide up their treasures when they shall flee before their enemies; because they will not hide them up unto me, cursed be they and also their treasures; and in that day shall they be smitten, saith the Lord.
30 Yea, behold, the anger of the Lord is already kindled against you; behold, he hath cursed the land because of your iniquity.
31 And behold, the time cometh that he curseth your riches, that they become slippery, that ye cannot hold them; and in the days of your poverty ye cannot retain them.
32 And in the days of your poverty ye shall cry unto the Lord; and in vain shall ye cry, for your desolation is already come upon you, and your destruction is made sure; and then shall ye weep and howl in that day, saith the Lord of Hosts. And then shall ye lament, and say:
33 O that I had repented, and had not killed the prophets, and stoned them, and cast them out. Yea, in that day ye shall say: O that we had remembered the Lord our God in the day that he gave us our riches, and then they would not have become slippery that we should lose them; for behold, our riches are gone from us.
34 Behold, we lay a tool here and on the morrow it is gone; and behold, our swords are taken from us in the day we have sought them for battle.
35 Yea, we have hid up our treasures and they have slipped away from us, because of the curse of the land.
36 O that we had repented in the day that the word of the Lord came unto us; for behold the land is cursed, and all things are become slippery, and we cannot hold them.
37 Behold, we are surrounded by demons, yea, we are encircled about by the angels of him who hath sought to destroy our souls. Behold, our iniquities are great. O Lord, canst thou not turn away thine anger from us? And this shall be your language in those days.
Mormon 1:18 And these Gadianton robbers, who were among the Lamanites, did infest the land, insomuch that the inhabitants thereof began to hide up their treasures in the earth; and they became slippery, because the Lord had cursed the land, that they could not hold them, nor retain them again.
You've got to be kidding me that this kind of wacko doggerel is "true".