The actual practice of DCAing likely existed prior to it receiving a name.. whether applying it to stocks or a farmer applying the principle to saving money in order to buy a cow...or various other kinds of applications, since surely investing in stocks was not as available to regular people in earlier years and surely bitcoin and even shitcoins have brought more and more opportunities for normal peeps to get involved into investing, which surely I would not suggest to invest into shitcoins, even though they have come available to normal people in ways that might have been much more difficult to get such access to areas of investment even 5 or 10 years ago (even though many of us would not consider shitcoins to reasonably fit into the category of "investment").
Speaking from experience, Beyond the fact that investing into bitcoin is profitable and shitcoins a waste of time and funds, there is less distraction when investing only in Bitcoin and it's easier for an investor to stay committed to investing only in Bitcoin than it is to invest in a particular shitcoin. While investing in shitcoins, you must be prompted to view other shitcoins that are emerging and before you know it, you've had your hard earned money scattered around meanings pump and dump shitcoins and increasing the possibility of losing funds unnecessarily.
Bitcoin has no direct rival, unlike shitcoins that rival each other continuously, so investing into Bitcoin only as a beginner shields you from being on the lookout for coins that are seemingly having more potentials because clearly there is none. So it limits your distractions and encourage you to be committed and dedicated to your investments without any negative contemplation.