Long-term DCA is definitely a good way to accumulate Bitcoin. I have no doubt about it. I have done my investing that way and have been getting great results. From disposable income. DCAing is more effective during times of volatile Bitcoin prices. Better for buying during dips season if you have sufficient floating cash flow. It may be out of reach for some investors.
Those who have a stable cash flow every month so they can take some to spend into Bitcoin will be very good to run the DCA pattern because the money that is saved will not provide anything in the future, while the money used in Bitcoin investments will continue to work to be able to generate more money in the future. Especially if the price of Bitcoin is currently experiencing a fairly large price correction so that it can be used as an opportunity for people who have more cash to buy more before the price of Bitcoin turns back up.