> mostly by humans

`mostly` is doing a lot lifting here. The Go rewrite uses plenty of copilot. The reason you trust it is because you trust the people doing the rewrite.

What about human written software makes it more reliable than LLM written software?

is it the craftsmanship, or the deliberate decision making of industry veterans?

Many projects that were done by humans and took a year can certainly not be trusted.

AI is a great use for this kind of boring, rote translation where precision is important. Humans are quite bad at it and tend to make mistakes. In either case the focus should be on improving testing, not trying to manually verify if the translation was correct by eye.