Agree with your opinion. This is also my understanding, please correct me if you think I'm wrong. When he said loss with DCA when the market goes up, you don't really lose, you just gain less than investing all at once. Likewise when the market goes down, you lose less than investing all at once. So, overall, DCA serves as a safety net to minimize losses, while limiting profits. The DCA method is more like value investing...
In this case, the price at which you start DCA is very important. And if you decide to start accumulating Bitcoins at the current price using the DCA method, then you will not need to be surprised that the price may decrease and your investment will have a negative balance.
DCA method can be started at anytime when a person is ready, it's your money and you have the freedom to start at anytime, it is the beauty of decentralization, the decision solely depends on you. But I can agree that there is a best time to start the DCA journey and that is during bear run when price has dumped so that your money can get you more value of Bitcoin, as price starts to increase so will the value of your Bitcoin will also be increasing. Unlike starting DCA method in this bull run when we are constantly seeing new ATH, it will not be profitable for a new investor to start now because anytime bear run will start and price will start to dip, which will depreciate the value of Bitcoin..
The major thing here is to have that fixed mindset that you are actually planning on holding your Bitcoin investment for a long term and you are settled with yourself on this then starting up your strategy in achieving this won't be any hassle for you again. The DCA method no doubt is best method is you want to be convenient and steady with your buying even if it's now you buying it won't be a bad time because your plans are not to temper with the coins till like 6-8 years and if you steady in buying then when the time comes to this fixed period you will definitely smile at the achievement and how far the supposed investment would have grown.
I agree with you, investing in the DCA method is the best investment strategy for Bitcoin investors.
Those who start investing with a decision to hold for about 6 to 8 years, or better yet, holding it for 10 years long term, then you can achieve real success in Bitcoin, because only in the case of long-term holding can achieve real success in Bitcoin.
In fact, the future potential of Bitcoin is very high, and Bitcoin is going to be much more valuable in the future, so if you want to achieve real success in Bitcoin, you must build a good source of income, and regularly buy a certain amount of DCA, and decide to holding it for the next 10 years. then you will definitely be much more satisfied with the future success.