Ask HN: What does “language/market fit” mean exactly?

I've recently heard this term, with the explanation that it's "the story of what a company does and why it exists or needs to exist". Like product/market fit wrapped in a holistic narrative... or something like that.

Outside of a few articles dating back to 2015, I don't see a clear, agreed-upon definition for "language/market fit" which makes its utility seem rather dubious.

Is this term just a buzzword? Or is it something more?

Your thoughts would be appreciated.