~snip~
That's nonsense. DCA is an investment strategy that solves the need for investors to know when to enter the market. It has nothing to do with being a high or low-income earner.
Anyone with a low income could still afford to buy a small fraction of Bitcoin (that they can afford) without the need for cost averaging.
If you're going around telling people that the DCA method is the only way they could invest in Bitcoin - stop. You're not telling them the truth.
And no, DCA is not a magical fail-proof strategy that guarantees profits, nor is it the most profitable one. It's just convenient and easy to grasp, that's all.
Exactly right.
At the end of the day you want to minimize the price of the asset, Bitcoin, when you buy it. Because you don't know the future price, you can only guess. DCA and lump sum are simply different ways to invest the same amount of money.
In lump sum you are basically betting that right now (or when the lump sum is done) it is the lowest point.
With DCA you simply even out the risk of getting that date right. This means that your price will be closer to the average, that means you won't win as much but also not lose as much compared to lump sum.
After the fact you can calculate which was the best strategy, but you can't do that beforehand as you can't predict the future price of Bitcoin.