According to what I have learnt so far the reason for DCA is to relieve or save yourself from the stress of not knowing when to buy, since bitcoin is volatile The practice changes at any given time so now the DCa help you to buy
Btc at any given time basically weekly. Sometimes you
May buy when the price is low and also by when the price is high. When you buy in some week it is low you are indirectly replenishing the lost value when you bought higher. So DCA is the best sofar in investment strategy it's a middle man between dip and HODL and lump-sum.
DCA is definitely a great collaborative tool, but it's very difficult to use it properly. The reason is that most people make mistakes in regular investment. In this case, it seems to me that there is no problem with the DCA method, the problem is with our decision here.
In order to invest in Bitcoin using the DCA method, you must first have an income source. If you don't have an income source, it will be difficult to hold the investment for long. You spend the money you need and invest some of the remaining money in the DCA method on a monthly or weekly basis. You should continue investing with DCA method for long time. You will invest according to your ability. If you can't invest long time with DCA method then you won't be successful.
You are actually right on this, most people have fail to understand that when it comes to Bitcoin investment, it's more suitable for a long term investor, because the current value of Bitcoin as of today doesn't reflect on the actual potential of Bitcoin price in the future, and due to it limited supply, it's even more certain that it will be more valuable, even in it price in the nearest future.
And as for the DCA method, you have actually said it all, without a source of income, it's very difficult to hold unto your investment, because you will definitely have bills to pay, and you wouldn't have to look towards your investment direction if you really want to hold on tight, for a very long time.