That volume is not wash trading (i.e. "fake volume" in my words). There is fake volume in crypto but that happens largely on the smaller, less established exchanges that are trying to make a name for themselves. You can see this from the "**" markings on CoinMarketCap that indicate that they don't include that volume in their total volume calculations. I did not include any **'d volume in my above calculations.

But don't take it from me. This comment https://news.ycombinator.com/item?id=39200966 elsewhere in this thread agrees that you can move that amount of Bitcoin in a small number of weeks.