I’m hearing this a lot, too. Of course, using the word “demography” in the context of the recent election is just a way to avoid recognizing that the progress is unstoppable and that the sexual mores of unhinged fundamentalists are of no interest to the majority of this country’s population any longer.
If you are unhappy with today’s “demography” (a.k.a. the progressive secular turn this country has experienced), then brace yourself. In 10 years, today’s “demography” will look like a conservative’s dream come true.