Copy trading isn't passive and if the trader you are copying isn't doing good, you're also going to lose just as them. The best passive strategy is to DCA and hold while the markets are boring. You don't have to be so active on this when you know what's happening. But if copy trading works well for you and this is something that you've been doing and you're used to it, there is no need for you to listen to anybody that says that copy trading is quite risky just like me. And that is because you know what you're doing and that's what is important as of this moment.