"I think you're last paragraph is exactly why the show didn't work for me dramatically (although I did enjoy parts of it quite a bit). Yes, I do agree that that is objectively wrong. So what are we learning? What's the show's message? it paints the situation is if New Yorkers are the only ones that know this is inherently wrong. That by default, Midwesterners are ignorant and homophobic. I think that assumption is a bit isolating."
There is no such "assumption" in THE PROM. Situations such as the prom cancellation HAVE happened in the midwest. But, as I remarked to a friend the other night, something like that could easily happen on Staten Island and possibly in some other parts of NYC. The fact that this particular show depicts SOME New Yorkers on the "liberal" side and SOME midwesterners on the "conservative" side does not imply an assumption that ALL New Yorkers and ALL midwesterners fit into those categories. I am very surprised that you felt otherwise.