Stephen Lingwood (Reignite) summed up many of my own feelings about the putative optionality of God one sees in Unitarian Universalism. (His title -- "Is humanism theologically tolerant?" -- is a bit misleading as it puts the onus of the problem on one half of the theist/humanist divide and misstates the conflicts in terms of tolerance, rather than I identity as I believe it needs to be. So don't be put off by the title.)
The problem is amplified where there is only a single congregation in an area and is expected to reproduce the theological breadth of the Unitarian Universalist Association itself. And that's most of the United States. We need a missional, not marketing solution. The problem furthered, too, when national advertising campaigns, in an attempt to say anything, crosses lines that homogenizes the constituency, thus excluding some. And by some, I include myself. I'm grateful it has been so tin-eared to date.
Better the UUA serve as a resource and coordinating body than continue its current path of becoming a content-free identity maker. God knows we could use the services.