That would be a nightmare! Though I like a few Popart steels, but definitely wouldn't want to see Ghibli Popart, no.
Maybe they're just ignoring that movie because it's part of the Lupin III movie series and not so well known if you're not a fan of Miyazaki. At least it being a Ghibli isn't a reason as technically they formed Studio Ghibli after Nausicaä. I don't know if they actually have a good reason to not include it.