anyone buying when the BTC price is going up should understand that it could dip and they might be buying at the top, and they could get stuck in a downwards price spiral, and that is part of the chances that they are taking in regards to when they decided to begin their bitcoin investment journey.
From what I've always noticed, investors are always moved to invest once the price is pumping ,some of this investors(or should I say most) are always after the short term profit, among which we will still have some future holders even some short term investors can still become long term holders.
This short term investors in my opinion are the reason we always have those massive dip season , all buy when it is pumping and sell when they see little dip causing more panic for new long-term investors and this is why new investors must always know that there will be a dip , it is just corrections and we will be back stronger so there's no need to panic when the time comes .
and surely when not sure, DCA can be one of the strategies to start with a weekly DCA amount that seems reasonable, study bitcoin along the way and study and put into practice good cashflow management practices, so then those cashflow management practices will help to inform any such newbie in regards to his position size and his ongoing strategies and practices to achieve his position size goals.
Totally agreed, since we can not easily predict Bitcoin movement
then DCA should not dissapoint although, using the "lump sum" could be beneficial attimes, it can still be used in form of DCAing