I think their are investors who are also comfortable buying through lump sum, but if you feel you have some leverage money you could still appreciate buying lump sum and still keep buying through the DCA, at some point you might feel like you’re behind schedule in your bitcoin investment journey and you’ll want to buy through lump sum and front load as well, which will not be a very bad idea.
Lump sum and front load are the same thing. They're all about buying more quantities of Bitcoin once and it's achievable as long as an investor has a large discretionary income at their disposal. Some investors might lump sum and arrive at their accumulation target immediately or even get to over accumulation phase. They can now continue holding on a long-term plan to get good profits out of their investment. Alternatively, as their holding period progresses, they may yet see the desire to increase their portfolio size and they keep on adding to it to increase their profitability potentials.