Doug,
I tend to agree with you about God being eternal & unchanging, though that is not a universally agreed upon point. Open theism & process theology both have robust arguments for how God changes. (as an unrelated side note, I always love when I find theological debates that don't map onto poitics, and the eternity of God qualifies). However, I'm unsure how relevant that is to this thread.
Your second point, about people changing, is something I also agree with and think is relevant, however. This entire thread is about how people change, including their attitudes toward sexuality and their understanding of the Word of God. Ironically, one of the biggest ways people change is in the pursuit of certainty & stability, which is basically what George meant when he talked about fundamentalism. For example, the PC(USA) denomination only felt the need to put anti-gay language in the rules of ordination after gay rights became an issue. "Fear of change" made the organization more visibly homophobic.