I disagree with you that trading is a bitcoin accumulation strategy. Trading is not good for anyone to think he can use to increase his bitcoin portfolio because you will run at loss and depreciate your portfolio going against your mission of increasing your bitcoin portfolio overtime. The price of bitcoin is unpredictable and that will make you get scared and sell all your bitcoin if there is a huge dip that last for long. Trading is gambling and the odd of running at loss is very high.

Accumulation means increasing and I don't see how you can increase your portfolio to a reasonable size if you are not buying bitcoin with DCA method or lump sum, sound strange. A new investor should use DCA method and buy every week regularly without missing anyone for 4-10 years and above. If he has extra cash, he can lump sum right away in order to increase his bitcoin size faster.

Buying the dip is not for new investors but rather for old investors whom their bitcoin size is in a certain level, maybe 60% and above of their bitcoin target. They can wait to buy in the dip, so that their bitcoin portfolio can increase significantly when they buy more at a cheaper price. If you choose the wrong method as a beginner, you might end up wasting your time that you should have use to accumulate a good amount of bitcoin and you will miss the opportunities in the market.