like someone left the LDS church because of offense over what a primary teacher said serves only to increase the divide and animosity between current and former Mormons. It doesn't help to de-legitimize reasons that people disaffect from the church. Maybe you can start building bridges by actually listening to those who disaffect or leave instead of just mocking their reasons.
By the way, I will absolutely own that there are people who are ex-Mormon that are antagonistic and contribute to the problem as well.