The 2% rule is pointless for long term crypto traders and HODLers.The bitcoin price always moves up and down with +/-5% every day.What if a trader just buys some bitcoins and activates auto stop loss order at 2%?I'm pretty sure that the order will be executed after minutes and after that ,the bitcoin price might go up with 10%,which means that he sold automatically at a 2% loss and now he has to manually buy btc at a higher price.