Absence of decapitations prove nothing. The same can be said of muslim communities in the west, and we see them grow steadily more violent and hostile as their numbers grow.
The question is what would the mormons do if they no longer had to consider the opinions of Christians. If the mormons or the muslims held the upper hand would we then see a return to polygamy with excess males being ostracised? Would we see a return to the violent ways of conquest that Joseph Smith called for? Who would they be if there was no Christian America they needed to fit into?
You’re spouting total BS. The mormons didn’t ‘stand and fight’. They maliciously butchered innocent settlers (including women and children) who tried to wander through their territory.