That's also a case where the tech came a while after the story. Our early snow tests on Frozen looked pretty terrible until the MPM simulator [1] came online later.
Did the MPM simulator get used in practice for Frozen? I talked to a few sim TDs (or whatever the equivalent Disney title is) and they said it was too slow at the start for practical use!
[1] https://www.disneyanimation.com/technology/innovations/matte...