The DCA strategy is always proposed for those that have a lot of time to to accumulate bitcoin and don’t have the funds all at once to put in them.
Actually the DCA is not just proposed only for those that have lot of time to invest, but have little funds to do it at once. Rather DCA is suitable for all classes of investors. Both the rich investors and the poor investors. The rationale behind DCA method of investment, is to allow investors invest certain amount of money in bitcoin at a certain intervals, but on a regular basis. So if the rich investor wants to invest in bitcoin but he doesn't want to buy it all at once, he can as well utilize DCA. The main reason for DCA is to mitigate the loss in capital invested when there is a decline in bitcoin market.
I don't think that DCA helps you to mitigate the loss invested in capital when there is a dcline in bitcoin price because if you DCA for a short period of time, you might not be profitable because bitcoin price might be at a price below all the price level that you bought. What I think mitigate the loss in capital is when you keep DCAing and hodli for a very long time. Hodli for long helps a lot and that is why it is always advisable for new bitcoin investors to have the goal of hodling for long.
The advantages of DCA is that it gives you flexibility in investing in bitcoin and grow your bitcoin stash overtime by regular buying weekly or monthly without stress. It also helps to increase your bitcoin portfolio faster compared to lump sum alone or waiting for the dip, because you are always buying irrespective the price of bitcoin. It is just like someone building a house non-stop, you will see that the house will get finished faster because of the consistency. DCA also helps you to manage your finance properly especially those that are rich and are into other investments.
A poor man can be discplined in his financial life when using DCA because he knows that he must buy bitcoin weekly and will always set that as his priority, and not spending the money on irrelevant things that will not add any value to his life.