Also, does it matter?

The point being made here is about the data LLMs have been trained with. Sure that contains questions&answers but obviously not all of it is in that form. Just like an encyclopedie contains answers without the questions. So imo specifying this as 'no-one asked this before' is irrelevant.

More interesting: did OP get a sensible answer to a question about data which definitely was not in the training set? (and indeed, how was this 'definitely' established'). Not that if the answer is 'yes' that'll prove 'thinking', as opposed to calling it e.g. advanced autocompletion, but it's a much better starting point.

Because I gave them a unique problem I had and it came up with an answer it definitely didn't see in the training data.

Specifically I wanted to know how I could interface two electronic components, one of which is niche, recent, handmade and doesn't have any public documentation so there's no way it could have known about it before.