It certainly couldn't be any worse or more idiotic than the scripts for probably every Hollywood natural disaster movie: The Day After Tomorrow, The Core, Deep Impact, Armageddon, etc.
Yeah, it wouldn't need ChatGPT and it wouldn't take a week - my initial post pretty much came to my mind fully formed because it's just every action movie trope of any 90's/00's Blockbuster. I can probably write a 90-Minute script over the course of a week if I write only during toilet breaks, the main issue is "Will there be $40M in the budget to blow up an actual Volcano?"