Some of those pro-lump sum arguments presume too much about people having lump sums that are available and able to be invested at strategic times, ...........
Got the point and of course when I used that tool (calculator to calculate DCA) I select the frequency first to week and investment to $10 only and I was on lose according to that tool when I set the start date of 2 months ago. Well, the point is the frequency of investing in BTC by doing DCA do provide us the benefit that if we do not have enough funds to invest all at once.
Means, let's say if the investment become $5k by doing DCA and if we have enough funds at the start then we might have preferred to do Lump Sum. But as I do not have that much money at the start so I should prefer to enter the market with less too. I totally got the point here too. And also, I think one might not like DCA while other could.