This assumes a couple of things...
One...that you have ALL knowledge of ALL ex-Mormons' testimonies, and that they ALL line up 100% percent behind your assumption...
Two...that you have universal knowledge tantamount to the level of God, Himself...that you have scanned the universal knowledge bank...and concluded that "Nope...No spiritual harm here...move along now."
For some reason, I doubt you have "Omniscience" written as a keyword on your resume'...