Yes, you can still make decent money when trading the volatility of bitcoin, but it is not a safe and recommended approach if compared to DCA.
Is never a guaranteed to make money from volatility, in as much as volatility is concerned the chances of making money is not certain, when we talk about volatility we are referring to price fluctuations moving up and down, however there are chances of you losing out your funds while trading volatility so we shouldn't always see volatility as an easy way of making money it doesn't work that way.
You can never compare DCA strategy and trading volatility because DCA is not established for day traders however it was brought to help people especially the beginners on how they can minimize risk and accumulate with the little funds they can afford.
It's true that traders and investors are two different things, traders make profits from price fluctuations that occur while investors make profits from increases in the value of the assets they hold, usually in the medium and long term. Talking about DCA, it is a strategy that is highly recommended for beginner investors and also investors who plan to hold for a long time, every week is an opportunity to buy Bitcoin, now the choice depends on you whether you will become a trader or an investor.
Especially being an investor is much better and safer than being a trader. Because a new person can never become a trader and it requires a lot of knowledge and experience. But a new person can definitely invest in Bitcoin monthly or weekly for a long period of time by adopting DCA strategy. And there is no fixed amount of money, he can participate in investment weekly/monthly with the little money he survives, and it is possible to invest in it for a long time and keep it safe. So I never support a new person to become a trader. Because a new person trader is definitely more likely to lose the portfolio. Therefore, long term investment following DCA strategy will work well.