I don't entirely agree. Actually, I mostly disagree with you here.
Investing is for attempting to accumulate more value by putting your money to work and incurring risk. As investors, we try and select assets that grow in value over time. It's not going to be a straight upward trajectory. Thus, we research the asset we wish to allocate our money to.
Of course, it’s riskier to invest in single stock assets or crypto/digital currencies, like bitcoin - versus an ETF or mutual fund.
However, DCA is the best method to invest over time. Dollar cost averaging succeeds because you buy fewer shares or quantities at higher prices and relatively more shares or quantities at lower prices.
It doesn’t much matter when you invest when you dollar cost average. It only matters that you do invest and that you stay invested. “Timing doesn’t matter” but “time in” does.
The main caveat here is that DCA works best with mutual funds or ETF, not if you select a losing stock or crypto/digital currency that can drop and stay low based on the individual company performance or crypto/digital asset performance. If you can select a winning individual stock or crypto/digital asset – then DCA works.
This is not financial advice. Please do serious research on any investment.