However, coming to the world of BTC buying the DIP is a good strategy for buying more BTC with lesser funds although this same strategy could be used by traders too since btc has always been in an uptrend buying a dip with strong capital could be a choice but most trader wouldn't want to risk that...
Indeed we cannot dispute the fact that buying at Dip is not good but however you should understand that Bitcoin price will not always remain Dip, so perhaps instead of focusing on buying only the Dip you can also think about accumulating with any current price since you will be using the DCA strategy, however one of the ways at which investors go about buying the Dip when they are using DCA is that when they noticed that Bitcoin price is Dipping they will adjust there accumulation amounts so that they will be able to buy more and when the price increases they continue with there normal amounts.
However it seems you are confusing buying at Dip to be use by traders because is totally different thing from traders and besides traders only focus to utilize the opportunity of every price consolidation or correction while holders are only the ones that utilizes the Dip the most, however you sounded so much like a trader because if not you wouldn't have been emphasizing on how buying at Dip could be use by traders.