> This is misguided. Maintenance of LLM code has a far greater cost than generating it.

In corporate reality they don't care. They have their product, requirement. As it starts to rot it's easier to rebuild than to maintain.

If you can ask for an LLM with a skeleton crew team now they can do it all again in five years time with the next level of LLMs.

Yes, it is precisely misguided, and will be in five years, too. Software lasts way longer than people think it does.