It seems to me that if you hack a bank and get it to put money into an account that is not rightly yours, or get access to an account that is not rightly yours,

It seems to me that if you hack a bank and get it to put money into an account that is not rightly yours, or get access to an account that is not rightly yours, you need to do something with the funds before the error is caught that can neither be reversed nor traced. And there are lots of limits on activity that looks like you are doing this. With Bitcoin you just transfer it to a new wallet and you buy yourself all the time in the world to do this.