DCA is also not for those who do not have stable finances, it is difficult to do DCA if your finances are not stable so I suggest you have a stable income first out there then you can do DCA happily without any obstacles.
So you think someone who wants to invest in bitcoin must have a stable income to implement the DCA strategy? And no one should invest in bitcoin if they don't have a stable income?
For me such assumption is very wrong and DCA strategy has no such rule. Even anyone can invest their money to save in bitcoin with only $1 every week or monthly.
I know someone in 2022 and he only makes about $50-$70 a week and it's not stable. But he can still do DCA to spend $2 on BTC every week.