For those who often buy Bitcoin via DCA every day, I think they don't consider it as a job to fill their free time, but it is considered an important job for them that they already like to do every day. While for those who make weekly and monthly accumulations, maybe only people who really need more time to separate the money they will use to buy Bitcoin with money for their daily needs. Although in essence they have the same goals, in such cases it will definitely be more profitable if they can do it daily.
The profit will depend on capital and the amount of bitcoin you hold, it is not related or determined by whether you use the DCA strategy daily or monthly.
If you use DCA daily and only buy 1 BTC per day, while if you use DCA monthly but you can buy up to 100 BTC per purchase. Obviously, buying BTC monthly will give you better returns.
Like El salvador did a strategy of buying 1BTC every day but so far they only hold over 6,077 BTC, while Strategy diligently accumulates BTC every time they have money and have accumulated 528,185 BTC, so far.