When I first used blockchain on my phone I didn't write down my backup phrase and proceeded to lose about 54 cents worth. Thank goodness I didn't lose more. I should have send an even smaller test transaction, but whatever.
That was the only stupid Thing, I did with BTC so far ...
People who got goxed should have seen it coming a mile away. There were weeks if not months where it was very clear you should have gotten your coins out of there.
They aren't the same type of mistakes, but I guess the feeling is almost the same, and you learn similar lessons, so I will say, yes it counts.