So it means that DCA is the best strategy to use for portfolio diversification.
Mate, there is no need to diversify your portfolio if you have accumulated the amount of bitcoin that you want to accumulate. After you have achieved the amount of bitcoin you want to accumulate, you can diversify by starting a real-life business such as selling commodities or real estate so that you will have more sources of income that will take care of your financial needs and you can be able to hold your bitcoin portfolio until the year you wish to sell it.
Trading and holding differ significantly from DCA. In Trading you need to learn the sentiment of the market. In the term of Technical analysis, after that, you can trade in it or hold it. So I mean, trading buddy needs a lot of effort. As it has to be seen from every perspective, it means technical analysis + fundamental analysis and specific time has to be given i.e., time entry has to be done when the market situation allows it. And if you lose, it cannot be recovered, despite the fact that in DCA, you have to put less effort into trading. That is, you have to consistently invest with less effort, and if you do lose, you can easily recover it on another diversification.
I agree with you that trading and holding are two different things because trading has to do with buying bitcoin at a low price and selling it when the bitcoin price is high for a short-term profit. For instance, you can buy bitcoin when the price is $40k, and when the price rises to $43k, you can sell your bitcoin and take a little profit. Holding has to do with holding your bitcoin portfolio for the long term, even when the bitcoin price is increasing or decreasing. For instance, if you accumulate your bitcoin when the bitcoin price is at $40k and the bitcoin price rises to $50k, but you keep holding on to the expected year you want to sell your bitcoin.