These AI video remixes are evidence that today's video models can produce very impressive outputs when provided with high fidelity creative direction.
I'm expecting to see Hollywood pick up these tools very soon, essentially as cheaper CGI. The next time I see an interesting movie make use of AI, it will probably be closer to shooting a scene and then transforming details (like these remixes) rather than the fully prompted trailerslop we see from people trying to "automate" movie creation.