An oft-repeated mantra is also that "gender is a social construct." I think up until now, American society has for the most part retained some pretty strict images of gender roles and stereotypes. Turn on a TV and it's bumbling, fat father and smart, responsible wife or buff, rugged masculine hero and sexy seductress on nearly every channel. Not much of a middle in the public eye.

Now that it's being normalized that you don't have to be in either of those groups or even try to be anything like them, kids a generation from now might grow up with a different standard. Plus, honestly, despite what people try to say, kids put things into distinct groups. With a growing presence of trans people in media, I do wonder whether kids will grow up with the idea that "this is fine, but different." The trans people simply being the male/female gender they identify as is a social thing that we're taught to accept, which could very well change because the next generation doesn't think of it that way anymore.

See also: America's formerly strict ideas of race. Not long ago, you were white, black, or asian and society decided what you were. Now we accept that there are in betweens and people outside those labels, and none of them are bad identities to have.