This is really a curious instance. Those people whose savings have been wiped out have been hit so hard because they had stop orders, not limit orders. The main difference is that once the stop point has been reached, a stop order becomes a market order and then is filled at market rate. So yes, a stop order at, e.g., 300$ turns into a market order for 300$ and it may be that you are filled at 1$ if there is huge market movement downwards.

Moral of the story: even if you do not grasp basic financial instruments, in cryptocurrency you can still be saved because of reputation.