Starting small tends to be a good way to both prioritize getting started but at the same time trying to make sure that the newbie is attempting to tailor his level of aggressiveness to his knowledge level and/or to the organization of his finances and/or psychology - and it seems problematic for any newbie to start out aggressively investing into bitcoin, unless he already has decent organizational skills and finances, which generally would not be very common of a situation.
Okay, I will try to draw a conclusion here that it means that aggressive actions should not be involved in accumulation, there is a little tolerance only when you are experienced enough or have really good financial management and arrangements and maybe there are some beginners who have good financial management from the start but of course everything must still be measured because in any case the risk will always lurk, but overall in my opinion the best for beginners is to avoid various actions that tend to be aggressive and it is better to accumulate with a small/ideal amount every time you do DCA allocation even though for example they have a fairly good financial situation in their life.
It is up to each person to figure out the level of aggressiveness or whimpiness that they want to employ, and surely some people are in a better position to be aggressive fromthe start as compared with others, even though I would think that most reasonable people are going to want to tailor their level of aggressiveness, and as they become more confident in bitcoin they likely would ramp up their level of aggressiveness. It is hard to speak for others, and surely it can take people a while to recognize and/or appreciate the strength in bitcoin's investment thesis that would justify them being more aggressive in their bitcoin accumulation (and/or management of their bitcoin holdings once they have reached targeted accumulation levels).