The Book of Mormon didn't seem to think much of "priestcrafts", I guess their own being an exception. I doubt Joseph Smith was ever exposed to Catholic or Orthodox priests in the narrow confines of his existence.
I really wonder how it will all fall out on Judgement Day. I don't know and don't pretend to know, but the bible does say all liars will be excluded from heaven. Now if the person sincerely believes what he spreads as gospel is the truth, I don't know how it will be for them.
I once had a vision of a picture of Joseph Smith turned upsidedown surrounded by some lemons. Now make of that what you will. I was concerned about my Mormon friend who I think committed suicide because of several possible reasons. Her was a Mormon bishop and they had a bad marriage but stuck together seemingly because that was all they knew socially and religiously. After her death, the husband had a brief marriage with a new wife and my son saw them down at court one day for abuse. I don't know where my friend went in the hereafter, but I had a dream about her going up on an escalator somewhere. I don't presume to know what the dream meant and my vision with the lemons could have been a projection of my own disbelief towards the Mormon religion. So we are back to square one.
I am still a little upset about my friend because she wanted her body taken back to Salt Lake City for burial and they buried her here and then all left for Salt Lake. To this day I am sad that they didn't respect her wishes. They had several boys who were all Mormon missionaries. I guess the thing that never ceases to amaze me is how otherwise intelligent people can so stubbornly cling to whatever it is they believe in, myself included. I believe certain basics, but don't presume to know about the rest of it, and know at this point in my life that I am not going to know.