I did see this trailer or at least part of it somehow and thought they were joke quotes. The ChatGPT connection isn’t really the issue here, it’s fucking lorem ipsum in production (that’s why it’s used; this is what inevitably happens otherwise). They don’t have an AI problem; they have a process problem if there’s no editing or at least fact checking vendor collateral before it goes live.
Nobody says they “built a trailer”. Created, edited, made, maybe even “put together”. But not “built”. It technically works, but it’s still wrong.
*Thinking about it more, I’d bet the program mixed up the word for house trailer or something else physical. Build/built would track better for that.
Not a native speaker, but if I wanted to boil it down to a word I would use “made a trailer”. I think you are right about the algoritm confusing a movie trailer with a physical trailer.