In my personal anecdotal experience, most of my Mormon friends and family members are, at best, only peripherally aware that these historical essays even exist and very few have actually taken the time to read them or reflect on their implications.
The Church of Jesus Christ of Latter-day Saints held a special service delivering a message of love, inclusiveness, and welcome to any Mormon who has felt harmed by or pushed out of the faith -- especially LGBT Mormons and their families.
Whether or not the Mormon Left is a substantial minority or an extreme super-minority may have important ramifications for the viability and success of future efforts by Mormon intellectuals and progressives to shape the future direction of their faith tradition.
Once you decide to decide, life becomes very simple. You don't have to think about certain issues or questions again. You simply get on with things and don't waste time and energy rehashing -- debating and arguing -- the problems and possibilities.