DCA also gives the investor a long-term committed investment mindset and disciplines the investor on carrying out such buying practices every week overtime to the point that he will be used to it and will always have it in thr back of his mind that he needs to continue buying by managing his cash inflow properly and aviod reckless spending.
Imagine this strategy doesn't been introduced on Bitcoin for sure many people would continue to insert their effort to do trades. Only few people would easily understand that there's a good way for them to execute long term hodl without getting to much stress especially that market is volatile and for sure this give a lot of stress for those people who's unsure about what they are doing.
DCA method gives them a sort of assurance that they are fine whatever incident happen to the market if they are consistently accumulating whatever prices show up since there's always huge chance for them to recover and earn in future. That's why I always suggest this method to used by my friends if they ask me what good thing to do with their bitcoin. I don't teach them to do trades since we know how risky it is since there's huge chance for them or anyone to lose their money.