An odd bunch, but no stranger than most religious sects.
I respect their clean living, but it's all the right things for all the wrong reasons. You should refrain from tobacco and alcohol because it's bad for you, not because of anything some false prophet says. Likewise, you should wear underwear to prevent yourself from staining your pants, not so you can be protected from a vengeful God.
Joespeh Smith is no more a false prophet than Jesus Christ. Jesus is just way more popular.
That said, I find many of the tenets of all religions to be a load of shit.