I had the impression that a lot of change came with the 2015 SCOTUS ruling. Which is a little unsettling - a lot of change only comes if one side imposes their will by law.
I could be wrong though. I haven't looked closely at the timing.
To your earlier point, "here are some card-carrying members of your tribe with a different opinion" definitely seems like a useful approach. If you can find those people, and they can maintain their card-carrying status after coming out of the closet with their contrarian opinion.
I could be wrong though. I haven't looked closely at the timing.