I think this is a common thread among those that are unable to take Joseph at his word. I wonder if you might flesh this out a bit more and say what you are actually thinking.
In order to put those two in that category wouldn't you by default have to put a bunch of others in that group also? By making it a small group it's easier to wrap your mind around, right? The larger the group you have to at least entertain the possibility that they are not all "frauds". If that is true, one might then be led to ask themself whether ANY of them were frauds. I know you're saying "pious fraud", but it's a fraud nonetheless. How expansive/far are you willing to go with this?
One might also look at the King Follett discourse as laying out the potential of God's children. That He would actually desire to give them all that He has. What Father would not want that for their child?
Regards,
MG