This is about right and I am disappointed it came a little but too late. One of the most disappointing thing about crypto exchanges and the zero presence of regulations is that it gives these exchanges the power to do whatsoever they want with impunity. The issue of manipulated volumes seems to be present in most cryptocurrency exchanges aside non custodial instant exchanges like
ChangeNow and the likes. Most other exchanges have for long continue to manipulate trade volumes to their advantage.