Nobody is saying that trading and at the same time investing in bitcoin is a total waste of time if you can handle both there is no problem with that, but come to think of it if you are trading at the sametime you are investing how can you apply the proper DCA strategy
Actually, If you can trade and invest, that is your personal matter. If you can focus on other things while maintaining DCA while investing on bitcoin, that is entirely your personal matter. But if you cannot maintain DCA while investing in Bitcoin due to focusing on other things, then your investment trend will not be right and you will not be able to control the balance. If you can maintain these, then it is good, but maintaining DCA is the most important thing for investing in Bitcoin, no matter what you do.
Actually, anyone can do whatever they feel is right and works for them but it will be complicated for an investor to combine trading and investing because it will basically lead to distractions such that you may not really balance it up as someone who is using the DCA strategy because you can use the amount meant for your DCAing to trade at some point which will not be right because the reason for the DCA is for you to have a consistent accumulation till you have acquired a huge portfolio so if you keep using your DCA amount for trading, it will delay the time you target to own a big portfolio and it will also draw your accumulation target backwards. So if you find trading good for you, just keep to it then if you also find investing in bitcoin better and preferable you can also keep to it that way instead of combining both trading and investing because it will become problematic for you at some point.