Another thought I have: Ever notice how the "preaching" is the "loudest" when it is to the choir? Truth is that it is too late.....the horse is already out of the barn.
There really is a small group who are holding on to the UC ways of dress standards. You know them by their volume and diminishing crowd. You'll also know them by their description of a "diminished" population in heaven.....basically everyone who is not like them!