I haven't seen the movie, only read about the controversy; but I recently ran across the video of the film's most popular song, "Let It Go", which stimulated some observations.
First, here's what the controversy is about, in brief. The character of Princess Elsa was born with an awesome power to control ice and snow with her mind, and is able to feel comfortable in extreme cold. Her power is presented as something dangerous and "weird", a deep dark secret which has to be hidden lest people outside the family find out. Eventually she is no longer able to hold her secret in; being found out for what she is, she flees the town where she grew up for the snowy mountains where she can be herself. A summary is here; the Christian viewpoint is given in detail in this blog post.
OK. This storyline does somewhat parallel the experience of a young gay person growing up in a repressive environment and eventually rebelling or escaping. I think Christians of an earlier era would have complained that it was promoting sympathy for witchcraft, not homosexuality -- but as you'll see, that relates to what I think is the real point here.
On to the song. I chose this version because it shows the words in writing, and the words are important.
First off, this is one hell of a song. The meditative beginning relies heavily on the piano (the most emotionally-resonant instrument, as I observed here); then it builds up into a rousing celebration of personal freedom. As for what she's saying:
The wind is howling like this swirling storm inside
Couldn't keep it in, heaven knows I tried
Don't let them in, don't let them see
Be the good girl you always have to be
Conceal, don't feel, don't let them know
Well, now they know!
I don't think it can be denied that this is a deliberate expression of what it feels like "growing up different" and having to hide what you are. If you haven't had the experience of going through life having to hide something important about yourself, you simply can't know what it's like. I suspect the liberal writers who dismissed that interpretation are mostly people whose core personalities don't include any seriously unconventional elements, and thus did not have that experience.
It's time to see what I can do
To test the limits and break through
No right, no wrong, no rules for me
And now we're right past lamentation of having to hide and straight into antinomianism. Elsa proceeds to build a magnificent ice palace for herself using sheer force of will. She's no longer a victim or even a liberated ex-victim. She's powerful.
I suppose one could argue that that reflects the current reality for gays. At least in liberal parts of the United States, gays don't need to hide; on the contrary, the balance of power has shifted enough that the CEO of Mozilla could be forced out of his job for siding with the bigots years ago, and some Christian conservatives are talking about terms of surrender in the culture war. But that can't be the movie's point, or it wouldn't have made such a big issue of Elsa having to hide the truth about herself.
I don't think the message here is about gays specifically at all; it's something much broader. There are a lot of ways in which an individual can be different from the norm, and spend a lifetime struggling to balance being true to oneself with the need to hide that truth from the world for fear of ostracism or worse. Gays are an exceptional case in having won so much acceptance and freedom to openly be who they are. Atheists have begun to make the same kind of progress, and there are those who argue that we should consciously model our own fight for acceptance on the gays' successful strategies. Some other taboos' death grip is still hardly challenged; the world is full of people who disapprove of things. Elsa isn't the gay kid who has to hide, or at least not only that. She's everyone who has to hide. If you're an atheist who arrived at that viewpoint still young, in a religious environment, couldn't the song lyrics above apply just as well to you?
I'm glad that message found such a wide audience. Someday we'll all be powerful, and build that magnificent palace.