It's not some grand treatise on man's place in the universe and it's not designed to cause people to act in ways they otherwise would not.
It not designed to educate or motivate.
It simply captures feeling and expresses it a way that can be conveyed to others.
Just like a painting.
If one paints Mohammed, does that mean he either worships or ridicules Mohammed?
BTW, freedom of speech is great. But that freedom doesn't help inform our choices about what to listen to.