yeah but in other circumstance that can help you if gdax no sucks

Read my post here
https://bt.irlbtc.com/view/2489032.0Really, you shouldn't use market stop orders, and exchanges shouldn't offer them. They aren't made for stuff this volatile.
You should use stop limit orders, or nothing if the exchange doesn't allow it.
Besides, exchanges do warn about slippage when using those.
It sucks to use them for you, and it sucks for the market that appears to be crashing way more than it actually should.
I think that guy lost 130k actually.