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Actually, a $10 per month is not totally poor for a student not from a buoyant background. But I feel if such person can devote time and learn trading, they can make $40 from the $10 within 3 months. Bitcoin might not give this in one year if bull run is not seen.
For sure, trading is bad advice for the vast majority and probably even the overwhelming majority (close to 90% of normal people --- aka normies)... It's like you are suggesting that since you are poor... learn how to gamble. Fuck that nonsense.
Personally I believe that if you are poor then that is more reason why you need to be more conservative rather than choosing to enter into risk merely in order to try to beat the odds - when 90% or more of traders are not beating the market, and they specifically not beating some kind of a DCA technique.
Sure, you can try to supplement DCA with some advance techniques of buying on dips, but the core of the beginning positions is probably to be focusing on investing regularly and figuring out ways to build your BTC regularly.. and don't be fucking around with selling.. If you want more BTC, then you need to figure out various ways to buy more rather than selling in order to try to buy lower... and also fuck shitcoins, if you are suggesting to get involved in some kind of a shitcoin in order to increase your BTC stash.. that would mean that you are distracted, and you probably would be better off figuring out various side hustles to earn more money in order to buy more bitcoin to get yourself up to buying $100 per week of bitcoin rather than $10 per month of bitcoin.
You appear to understand trading well, pal. Yes, most traders dont beat the market. Trading, especially day trading, needs a lot of time, expertise, talent, and luck. This isnt possible for most "normies".
I'd advise against generalizing any transactions. While I agree that a conservative, DCA approach is usually optimal, especially for newbies and those with low finances, other investment techniques might be advantageous.
I'd also like to point out that your "shitcoin" stance is really binary. Altcoins with good fundamentals and large returns exist. Diversification can reduce risk even in crypto. Each investor should do their homework before investing.