Yeah my comment is meandering a bit. Maybe a more succinct way would be to say: this so called market is a private firm and it's in their own interest to not divulge the whole picture.
You're absolutely right about complex systems always leaking info through unintended sidechannels, but I would argue that is information not available to everyone on the "market" at the same time, thus skewing the market (and again benefitting the owners of the market more than anyone).