”The Policy” placed a line in the sand that has had a huge impact on the culture here in Utah. The polarization you may sense in CA is actually very evident here in Utah. Just after the announcement is when mainstream conversations about hordes leaving the church also began to surface.
This is just conjecture, but perhaps the fact that Salt Lake City ranked #7 on the list of LGBT cities in the US in 2015, along with its Center of Mormonism status shows that there are a LOT of Mormon families who have LGBT family members? The Policy gave rise to a great deal of consternation among the residents here—nonmembers and members alike, and may have pushed some people into inactivity and disassociation.
Maybe this is what @Chris is sensing: