I think AI is inevitable in the way that bitcoin is now inevitable: it's not going to go away, it consumes a huge amount of energy, has various negative externalities, but a massive fanbase.

It doesn't really matter whether crypto is "useful", it has billions of dollars worth of fans. Similarly the LLM fans are not going to go away. However, there will probably be curated little oases for human-made works. We're also going to see a technique adapted from self-crashing cars: the liability human. A giant codebase is launched and a single human "takes responsibility" (whatever that ends up meaning) for the failures.