even when you use DCA to invest in Bitcoin, you still need an understanding. when a beginner wants to invest in Bitcoin, then they must know too. maybe just as a basis, at least to avoid losses in implementing the investment.
some beginners must have confusion in determining the right time to enter to buy. DCA may be a common investment strategy and can be applied by beginners. but before doing so, beginners must still learn first, do not just follow other people's advice.
to be honest, I don't even think doing DCA with bitcoin even require thorough understanding of how things works, I've seen plenty of people doing DCA without knowing what even bitcoin is and they're already making profit.
the important thing here to know is just that BTC have bullish cycle and they just need to wait for another bullish cycle because speaking from data bitcoin price always multiplty over the course of every cycle.
it's really easy to do, doesn't really need that much knowledge either.
it's different if you are trading though, only then you'd need to understand fundamental, news and so on.