Funny enough I find LLMs useful for fixing the "death of a program" issue. I was consulting on a project built offshore where all the knowledge / context was gone, and it basically allowed me to have an AI version of the previous team that I could ask questions of.
I could ask questions about how things were done, have it theorize about why, etc.
Obviously it's not perfect, but that's fine, humans aren't perfect either.
Ah, an undead programmer. Reminds me of "Dixie Flatline" from Neuromancer (1984), a simulation of a famous dead hacker trapped in a cartridge to help the protagonist.
I could ask questions about how things were done, have it theorize about why, etc.
Obviously it's not perfect, but that's fine, humans aren't perfect either.