Well, it's either true or false. If it's false, we're engaged in a great fraud. If it's true, it's the most important thing in the world. Now, that's the whole picture. It is either right or wrong, true or false, fraudulent or true. -Gordon B. HinckleyCould *one* fact, if of enough importance, show the church to be "a great fraud?"
How about several?
Joseph Smith did not translate "The Book of Abraham."
The temple rituals are not of God.
The Book of Mormon is fiction.
There's more (what shocked other former Mormons) such as the fact that
Joseph Smith married (and I mean that in the full sense of the word) multiple teenagers and already married women).
I vote "false" and "a great fraud."