Necessarily, LLM output that works isn't gibberish.

"Gibberish" code is necessary code which doesn't work. Even in the broader use of the term: https://en.wikipedia.org/wiki/Gibberish

Especially in this context, if a mystery box solves a problem for me, I can look at the solution and learn something from that solution, c.f. how paper was inspired by watching wasps at work.

Even the abject failures can be interesting, though I find them more helpful for forcing my writing to be easier to understand.