Bu that's not really what danlitt said, right? They did not claim that it's impossible for an LLM to generate something different, merely that it's not a clean room implementation since the LLM, one must assume, is trained on the code it's re-implementing.

It's definitively not the source of the word, but it might very well be the reason the decided to have a "fest i val". Gothenburg is famous for their puns, and even today they open up the mouth of the whale for visitors on two occasions - valdagen (election day) and Valborgsmässoafton (Walpurgis eve).

Reference: https://youtu.be/ykj3Kpm3O0g