Criticising DCA as overhyped means you don't fully grasp the effectiveness of the strategy regardless of market conditions. DCA strategy is a wise move for those who prefer not to wait for bearish market before investing. Many investors are leaning towards using DCA strategy in Bitcoin because it offers a way to invest consistently without timing the market, and it also helps one not to make poor decisions due short-term fluctuations. By consistently investing a portion of your income/ earnings through DCA, you avoid the the risk of using those funds for other purposes while waiting for a bearish market. The strategy is helps you to stay disciplined and committed to your investment ensuring that you build your bitcoin holding overtime without the temptation of to spend the money elsewhere.
The fundamentals of bitcoin as an assets and the growth potentials overtime is the reason for long-term investment. Those who bought bitcoin in 2021 at 68k, while the initial investment may have been made high price, the long-term outlook for bitcoins value and adoption could still offer the potential for profit in the future. Staying committed and having faith in the long term growth of bitcoin
I think more knowledge about DCA is needed. The main objective of DCA is to increase the probability of profit by reducing the probability of loss. As the Bitcoin market is volatile, there is a possibility of loss, often a long-term investment. As you mentioned in 2021 when bitcoin was $68k if a person suddenly bought 1 bitcoin, 4 years later he would still be at a loss. Because Bitcoin's current price is $65+ which is $3k less than $68. If that same person were to buy 1 bitcoin using the DCA method, the average price would be approximately $50k. That is, today he would have made a profit of approximately $15 instead of his loss.
Such examples are given only to illustrate the point of convenience. My personal advice would be to plan for the longer term with Bitcoin. Maybe 12 years or more. One more tip I would give you is to start an investment fund from the beginning of your career till the end which will be part of your retirement plan. Its tenure may be 25 years or 30 years or more.