How is this different to when Mr. Rogers shared a wading pool with his Black mailman? Or Captain Kirk kissed Uhura? Both evoked the same conservative outrage we hear about today over things like this. Introducing and celebrating people different from ourselves is how we become more comfortable with them. It eliminates the other-ness of them. As these kids grow up they're going to become aware of a vocal minority of adults who are trying to convince people to marginalize these minority groups and in some cases even call for their extermination. Yes it's a culture war, but it's not being waged by LGBT people, it's being waged against them.