You're clearly not the target audience for this then. That's usually my assumption when I can't figure out a use case for some research a bunch of people are excited about.
Like we build these things and show them off, without any thought to the ramifications that they could lead to. Maybe I'm catastrophizing, but all this tech lately seems very unregulated/dangerous.
I saw someone else say "I'm sure it'll be crap like all of the other AI stuff I've seen" but that's a naive view. Things that have been 100% created by AI, sure they're kind of boring a lot of the time. But this kind of tech gives people with a creative mind, but no money or time or resources to create a storytelling movie/video, the resources to do it. Obv ignoring the fact that Goog will never release this, if something like this did come out, it'd be game changing for a lot of people.
Think about something like RPG Maker. Yeah we've had a ton of random garbage come out of that platform but there were also incredible.
AI isn't just some garbage maker. It is a paint brush that enables people who are alone in their room to make something bigger than them.
FWIW, my kid also designed their own board game pieces in TinkerCAD and we 3D printed them. It's nothing special but it's frankly astounding how far kids can go now towards creating something not just imaginative but almost professional quality with the tools at their disposal now. For throwaway school projects. It may not be my kids, but I'm excited for what the next generation will be able to accomplish without massive capital requirements to fulfill their vision and create something.