Well it is practically impossible for an investor to be investing daily unless the investor earns daily and even if he does, I don't think it will be convenient with the Investor and I think this can only work ideally. Additionally, investing daily, weekly or monthly with discretionary is not an aggressive investment perhaps you should use the word intermittent investment because aggressive investment is when an investor used a good amount of money that is beyond their normal weekly or monthly investment money (DCA money) to invest in Bitcoin and this is the reason why I said it can not be possible to do that because aggressive investment amount is always bigger than DCA amount.
If a person invests 80% or the entire amount of discretionary income, then we can call them aggressive investors. If they invest through the DCA method, we can still call them aggressive investors. Because they are investing the entire amount of their discretionary income, which cannot be called a normal investment at all. Buying only through DIP or buying outside the DCA method is not something that will make them aggressive investors.
Not everyone's income is the same. There are many people who work as daily wage earners. For example, after working all day, they are given a certain amount of money as salary, they can continue to buy continuously by adopting the DCA method every day. This will not be bad at all. Because all the people who work as daily wage earners cannot accumulate or save much money. Because they have daily income and they spend almost the entire amount of money from it, so if they want to buy daily by adopting the DCA method, then it is not a bad idea at all.
As you mentioned, people who earn daily wages but get a fixed amount of money at the end of the week, they even find discretionary income from it. So if a reasonable income system is created for them, then maybe investing is not wrong for them however since they are getting money after working daily, if they invest the entire amount, it would be an aggressive investment. Many people can learn very little, so if after they start investing, their comprehension increases and they can increase the level of work and also increase the level of salary so we can say with certainty that no matter what profession a person is in, investing in Bitcoin is not a huge burden for them.