That is correct, and if you lump sum (or front load) right away, then you run a risk that the BTC price might go down, so you can either supplement your having had front-loaded (at a higher than the subsequent dipped price) by continuing to DCA while the prices ended up being lower or to have some extra that had been set aside to be able to buy on dips (that you had not known were going to happen but that you kept the extra money, just in case the dips happened, and they did end up happening so you use some or all of it to buy more BTC).
It's very true about DCA beign the best supplement to front loading with a lump sum cause you know we can never predict what would happen next, while preparing for up it's also good we prepare for down, and if we have not kept that extra money for buying on dips then DCA would be a good back up, after I read this comment I began to have a better understanding of why they said DCA helps protect us from market volatility as in this persons case where immediately after front loading the market had a dip, and yeah he woudl be on a loss immediately in his portfolio, but let's assume it to happen this way. After investing 1500$ Into bitcoin, the market dipped up to 30% and his original investment would be down to 1050$(
I don't know if I'm right on this calculation, quite new to this), and then immediately he woudl be thinking about trying to take his portfolio back to 1500$ which would be about a 500$ dip buy if he has the amount but in a case where is has already used up his reserves and disposable cash to dip buy and only has DCA allocation then its still not a very bad situation for him cause with time his DCA can Balance up his average buying and maintain his portfolio as long as he remains consistent in doing it. So I think the power of DCA comes with beign consistent on your investment as DCA can only be good and protect from volatility as long as you continue using it.