I understand your point. But let me ask, is the fact the Paul met an untimely death indicative that he was a false apostle? How about Peter? James? It seems clear from the Bible that Paul and other Christians fully expected the end times and the return of Jesus to be in their lives. It seems Jesus may have as well. Does this make Christianity false in your mind?
Deu 13:1 If a prophet, or one who foretells by dreams, appears among you and announces to you a miraculous sign or wonder,
Deu 13:2 and if the sign or wonder of which he has spoken takes place, and he says, "Let us follow other gods" (gods you have not known) "and let us worship them,"
Deu 13:3 you must not listen to the words of that prophet or dreamer. The LORD your God is testing you to find out whether you love him with all your heart and with all your soul.
Deu 13:4 It is the LORD your God you must follow, and him you must revere. Keep his commands and obey him; serve him and hold fast to him.
Deu 13:5 That prophet or dreamer must be put to death, because he preached rebellion against the LORD your God, who brought you out of Egypt and redeemed you from the land of slavery; he has tried to turn you from the way the LORD your God commanded you to follow. You must purge the evil from among you.
My point is given this standard not only should you reject Joseph Smith but you should reject Jesus because he said that there were those living that would not see death before he comes in power and glory. You ought to reject Paul because Paul told people Jesus was coming in their life as well. You ought to reject other parts of the OT that have prophecy that has not been fullfilled. That is all. It seems to me you hold Mormonism to one standard that you refuse to apply to Christianity.
But that is typical of those who attack one religion and yet favor another. The typically cannot see the problems in their own faith system. Maybe you really have examined Christianity with a critical eye. But it seems to me you may be demanding someone to so something you are not doing with your own beliefs. Maybe not.
But it does not matter to me. I really am all for giving people space to let them believe, worship and have faith in whatever way they choose and how it works for them. But I do think it is wrong of you to accuse David and others of dishonesty because they may know the same facts about LDS history and conclude something entirely different than you do.