Says you. The problem is, religion is a topic that informed people disagree about. The question of whether Joseph Smith was a false prophet depends entirely upon your own presuppositions.
No it doesn't. The Bible tells us a simple test for a prophet. If any of their prophecies are untrue, then they are a false prophet (and under Levitical law must be stoned to death . . . tough sanctions in those days for pretending to talk to God when you don't). Deu 18:22 21 You may say to yourselves, "How can we know when a message has not been spoken by the LORD ?" 22 If what a prophet proclaims in the name of the LORD does not take place or come true, that is a message the LORD has not spoken. That prophet has spoken presumptuously. Do not be afraid of him.
You can put in "false prophecies" and "Joseph Smith" in a search and come up with tons of sites laying them out.
Here are a couple:
David W. Patten to go on a mission.
Verily, thus saith the Lord: It is wisdom in my servant David W. Patten, that he settle up all his business as soon as he possibly can, and make a disposition of his merchandise, that he may perform a mission unto me next spring, in company with others, even twelve including himself, to testify of my name and bear glad tidings unto the world. (Doctrine & Covenants 114:1)
This prophecy was made on April 17, 1838. David W. Patten died in October of 1838 and thus never went on a mission the following spring.
Another false prophesy commonly pointed to: The United States Government was to be overthrown in a few years.
I prophecy in the name of the Lord God of Israel, unless the United States redress the wrongs committed upon the Saints in the state of Missouri and punish the crimes committed by her officers that in a few years the government will be utterly overthrown and wasted, and there will not be so much as a potsherd left for their wickedness in permitting the murder of men, women and children, and the wholesale plunder and extermination of thousands of her citizens to go unpunished (History of the Church, Vol. 5, page 394).
Joseph Smith made this prophecy in May 6, 1843. However, the United States Government did not redress any of the wrongs committed against the Mormons in Missouri, and now over 150 years later, the U.S. Government still stands.
The one that gets me though, really gets my goat is that Joseph Smith's writings rely on a demonstrably false history -- he wrote that American Indians were actually lost tribes of Israel. Genetic testing, linguistics, archeological evidence all show this to be false.
Don't buy into the worldly view that all religions are the same because they are all poppycock. Christians can prove that Jews lived in Jerusalem for one thing . . . seemingly minor, a bit silly right? Until you look at cult beliefs that posit bizarre historical scenerios that demonstrably never occurred.
Contemporary historians wrote of Christ, Herod, archeological evidence continues to grow (and never contradicts) Biblical accounts, for example it used to be said by secular people that Pontius Pilate was a myth. Then they discovered stones engraved with his name. Etc. Etc. Where Christianity should be supported by evidence it is there. Where Mormonism should be supported by evidence it is not. There is faith, and then there is faith that is counter to reason.
Especially if those presuppositions are based upon Scripture - the Old and the New Testaments.
“The question of whether Joseph Smith was a false prophet depends entirely upon your own presuppositions.”
Not really. Facts are stubborn things and Joseph Smith lived only a 160 years ago. There are TONS of documents regarding everything from the Kirtland Bank ledger, to JS love letters to his coochie girls, to the Book of Mormon, to the Nauvoo Expositor’s accounts of embezzlement that can be analyzed. If there had been this much data on OJ, he woulda swung.