I don't see any other alternative to DCA method to get profit from investing. If any investor wants to make profit from investing then he must adopt DCA method. To use DCA method investor should always keep an eye on cryptomarket whenever cryptomarket. At the time of dumping, investment should be done using DCA method, if you invest in it, the amount of profit will start increasing gradually. Otherwise, if you make a wrong decision to invest, there will be more chances of loss instead of profit.
I think the DCA method is not as complicated as you say, because any investor can easily set their time when they want to buy every week or every month when they want to invest using the DCA method. Because if investors have to continue to monitor the market every day just to buy Bitcoin when there is a price correction, I think that is no different between investors and traders who basically always monitor the market to buy when the price starts to be corrected.
Meanwhile, what I have experienced and seen for myself is that people who use the DCA method are actually quite easy to manage their time to buy and also quite easy to manage the capital that will be used for investment. So you also shouldn't equate investors with traders who often monitor the market to buy something they want when price conditions start to turn lower.
They could buy whenever they like if they use DCA method and they don't need to think about other risky things compare if you do those daily trades. Maybe some other think about its the same as daily trades since they only look for potential profits but execution is different and the level of risk taking is not quiet much if you do this method well. People just need to understand the conditions and prepare some funds intended to us for DCA so that they became successful and not just good at start.
I know its easy to tell this when writing but if they could able to research to know more information about this for sure they understand this and maybe they can see if this one good for them or they stick around adopting the risk since they like to trade and earn in short period of time.