Of course, there is some value to keep investing into bitcoin on a regular basis, such as weekly, yet anyone has to attempt to coordinate his amount invested into bitcoin with the amount of discretionary income that he has, and surely if income and/or expenses are erratic or irregular, then there maybe additional challenges to keep the weekly amount invested as regular.
Ability to front load a bitcoin investment might not be common, yet it still can come up from time to time, even for a person who might have had been investing into on a weekly basis for a year or two, such person might have cashflow circumstances in which every once in a while he receives bonus amounts of money or even that he has unexpected amounts of extra money that might come available and then provide opportunities to front load the bitcoin investment, whether he chooses to invest right away with all of the extra money or to set up deferrals by DCA or deferrals by buying on dip that may or may not end up playing out.
We have discussed this in other thread that we can mix three strategies i.e. DCA, Buy the Dip and Lump Sum for accumulating Bitcoins. As you said, in cases like if someone got bonus or through some other sources he got cash which is extra for him then he can invest that into Bitcoin which can be a kind of Lump Sum or it will be another bonus if Bitcoin is taking a Dip at the moment.
If someone only has a limited budget for Bitcoin then best he can do is to keep moving with DCA because any amount going into Bitcoin is better then no money going into Bitcoin Well it is true that there tends to be a bit of evidence that a person is prioritizing his bitcoin investment if he regularly invests whenever he gets the money, such as on a weekly basis, and so there could be a bit of lessening of the priority if the guy believes that he is going to hold that extra money on the side and wait for a dip (a dip that may or may not come).
Sure there are ways to split up the amount of money that a person has available and to invest right away with some of the value and to hold the other part of the value for buying on dips that may or may not end up happening... yet , surely a presumption of having a limited budget is that it may well not be very practical for the person to be holding back value, since splitting it up does not really rise to a very high level.. or at least not necessarily a high enough level to justify splitting the amount into two parts. So part of the advantage of mixing strategies is that any person can sometimes find himself in a situation in which he usually does ONLY DCA, but some temporary circumstances might justify that he mixes up the strategies and perhaps throws some funds into the buying on dip category or just lump summing based on the quantity of funds being available help to justify that buying right away and with a lump sum might be a good way of deploying such funds (or a part of such funds)..