On the one hand, you don’t want to control children’s media diet so much that you’re basically deciding what they like. They should be their own person with their own interests.
On the other hand, you don’t want children to like crappy stuff. I can argue for both sides.
Disclaimer: I am not a parent.
Even if they saw and enjoyed it, they’d forget it fairly quickly. I’ve forgotten almost every non-Disney(/Pixar) movie I saw in theaters when I was little, and some of those I’m not even sure if I saw in theaters or if we waited for home releases.