Fluctuations in the market price was never their problem, this is only accountable for newbie investors. If volatility of bitcoin was the problem of those early birds I don't think any would have successfully held their coins until today. When you have understand how the market operates and the major trend of the market it's easy for you to understand that bitcoin from a higher time frame is headed upwards irrespective of those minor bearish trends that tends to weigh newbies to panic and sell. When using the DCA strategy to accumulate there is no need to develop doubts to weather or not to invest during the peak price as long as your goal is to invest for a Long term, though this might be a problem for newbies but as time goes by they'll adapt to the system and understand that those are just little insignificant moves in bitcoin's major trend.
Beginner Investors need to learn a lot about how to invest so that they don't make mistakes in taking steps if they buy BTC in DCA mode it will benefit them in the future, after all, people who invest use cold money to do it, so even though they buy at a high price, it doesn't matter if they don't always look at the fluctuating coin price and don't panic if there is a decline and remain disciplined in investing.
I think a beginner can start with the basic knowledge, as they can not be able to get all the required knowledge without investing. However, When a beginner is provided with the basic knowledge about bitcoin investment it means that they're fully aware of the market volatility, and also knowing that investing with our pocket money is not advised but from their discretionary fund, and also knowing that emergency fund is required during this process of accumulation, and also, the risk that is involved and how to manage them. As Long as a beginner is provided with this guidelines and it happens that their discretionary fund is available, they can start accumulating bitcoin as soon as possible, probably if there's any information that they're missing out I believe with time they will be able to figure it out.
A newbie are not suppose to just start investment mainly those that does not have the idea of investment at all, instead they need to be building their different backup funds, then start learn and practicing on how to invest in Bitcoin by keeping aside some of their income for 4-10 year long-term planning, in other to be successful in their investment journey, but newbies still need to get used to Bitcoin, but we don't have to reason that they do not have any experience in any investment ,they can start with the DCA strategy until they fully understand the process, then they can decide on which other strategy they wish to adopt.
Many times newbies are not going to be in a position to really invest either aggressively or ruthelessly, since they are likely ging to simultaneously build their various back up funds and to get into a bit of practice to make sure that they are used to putting aside some of their income for 4-10 years or longer. .. so if they are seriously putting their money invested into bitcoin for 4-10 years or longer, then they are not going to have access to that money, and so if they make mistakes in regards to their level of aggressiveness (including that they had gotten too aggressive), then they need to figure out from where to make up for their mistakes, and so personally I don't have any problem with the idea of trying to be as aggressive as possible, but surely newbies to bitcoin still need to get used to bitcoin, and sure, we should not presume that a newbie to bitcoin does not have any investment experience, so they do have to adjust their level of aggressiveness also to their personal circumstances and/or other investment and/or cashflow management experiences.