Guilty, as charged, your honor. It comes from thinking too much, I guess.
Now the polygamy question... In today's times such a figure [5%] would be far less, because the need is far less, if at all. IMHO.
One could always make the claim that God gave section 132 to Joseph because it was the thing that would, for sure, get the saints driven out of Nauvoo and into Deseret -- er, Utah.
But it's clear that the church leadership was determined to fight the government, tooth and nail, on the polygamy question, until the Supreme Court cited "tradition" as being the reason why the evil LDS shouldn't be allowed to do what the Constitution said they were allowed to do (or, at the very least, didn't prohibit). Must have been one of those "hidden in the penumbra" kinds of things...
Anyway, the church leadership sure wasn't letting on that the Lord was planning to change His mind any too soon on the polygamy question (and there are even some purported revelations, depending on who you ask, that make it clear the Lord had no intention of revoking said law).
From a revelation to Wilford Woodruff in 1880 as copied from the Journal of Wilford Woodruff, about 1908, by Joseph W. Musser, at the request of his father, A. Milton Musser, the Assistant Historian of the Church of Jesus Christ of Latter-day Saints. A portion of it reads as follows:
And I say again, woe unto that nation or house or people who seek to hinder my people from obeying the Patriarchal law of Abraham, which leadeth to Celestial Glory, which has been revealed unto my Saints through the mouth of my servant Joseph, for whosoever doeth these things shall be damned, saith the Lord of Hosts, and shall be broken up and wasted away from under heaven by the judgments which I have sent forth, and which shall not return unto me void.