Well buying at the dip and also investing in the DCA strategy accordingly can be combined but it kind of essential to understand the importance of each approach
If you buy the dip, you're already considered investing. So, whether you DCA or simply buy the dip, there is not a lot of difference and even can be said of the same thing.
I guess that depends on your entry point since if the market is experiencing that situation then sure there's really no problem to acquire in that situation and that's somehow good scenario to buy Bitcoin at bargain price. But if you have this mindset buy at dip then sell at top then I guess you have trading and you are heading unto unsustainable situation. People should correct their mindset since long term investment is actually not all about buying at the dip.
Better be more consistent of buying if their intention is to hold for long term since they would get high chance to succeed and will last long if they are consistent to follow not only their long term aims but also their whole accumulation process. There's actually difference if you talk about buying at the dip since you provably don't spot this easily and there's so many possible positions you missed out.