It can be difficult to say for sure what any person should do, yet if a person invests similar amounts of value on a regular basis (such as weekly) for 4 years straight, then their average cost per BTC will be right around the 200-WMA - and historically, an overwhelming majority of times, the BTC spot price is at least 25% higher than the 200-WMA.
Of course, there are no guarantees, so any of us who might be attempting to think and act rationally, may well consider that it would be good to invest into bitcoin for a whole 4 -6 years or more and then perhaps to reassess after that. Surely if we are able to frontload our bitcoin investment, then we may well have differing results, yet there are not too many normal people who are easily able to frontload their investment into bitcoin. And, yeah, for sure, each person has to decide for themselves whether and if so how to invest into bitcoin.
People, especially newbies, don't do much research or apply methods like DCA so that they can have a better buying average if they are investing a similar amount every month or week, etc. What they do is they put together some money and then wait for the perfect time to make an entry, and for most people, the perfect time is when Bitcoin falls down to $30k or below because they believe that is the only way they are going to get profits from it.
Now, when they are waiting for that perfect moment and not buying when Bitcoin is around $90k or something, if Bitcoin goes higher, let's say above $120k or something, they might regret it, but they will still wait for it to drop. This makes people lose so much time and opportunities because their minds are only stuck at that perfect moment in which they will cash and make an entry in the market so that they can get more profits over time.
One thing they forget is that there is no perfect time to accumulate Bitcoin, waiting for Bitcoin price is drop before accumulating Bitcoin is a waste time you may be waiting for bitcoin to drop before accumulating while to price keep increasing expecially for low coiner or low income earners you can start accumulating Bitcoin where ever you meet the price instead of waiting for that perfect time which is for Bitcoin to drop first, maybe those set of people who also wait for bitcoin to drop before accumulating never know that there is a strategy called the DCA strategy where they can be accumulating Bitcoin if the price is high or low, I will advise them since they couldn't start yesterday now is the second best time to start accumulating Bitcoin.