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From my understanding of what DCA is about. You have explained what it means but the major challenge of DCA's investment strategy is constantly regurgitating the investment which I believe is the reason why JayJuanGee brought up the idea of analyzing the plug-in numbers to see how it plays out.
Yes, DCA is the method that is understood and used by Bitcoiners, not rich/naive folks who join the market due to the advantage presented by Bitcoin.
DCA requires you to constantly have a budget in your pocket to purchase and purchase within the time period you determine. Not everyone is suited to this strategy - but you can get around this by not using 100% of your budget on your first purchase. Set aside a few percentages into several parts – for example 25% of each purchase, that is also referred to as DCA. If you have an extra budget each month - it's probably safe for you to spend 100% of that budget on each purchase and you'll do DCA again next month. In essence, DCA is an adjustment by dividing several parts of your capital instead of buying all at once with 100% of the capital.