I'm no fan of Coinbase so don't mistaken me for a shill but I've also heard of countless cases of the opposite case (e.g. order gets declined and the coin drops

I'm no fan of Coinbase so don't mistaken me for a shill but I've also heard of countless cases of the opposite case (e.g. order gets declined and the coin drops drastically post order, resulting in a "gain" for the person whose order got declined). It seems reasonable that these are genuine mistakes. It seems ludicrous for Coinbase to implement order cancellation so that they can do some risk-free hedging when something like that is ripe for some serious whistleblowing.