What I know about the DCA method seems a little different from what you are saying. I agree with you that the DCA method can be started at any time provided the capital is read as it is an ongoing investment strategy. I defer with you on the aspect that the DCA method will not be profitable on a bullish market because it can be profitable in any market condition provided the plan is the hold those coins for a long period of time. I also know that the DCA method does not care so much about the price so any time is fine and any price is a fair price for the DCA method.
Right. Dollar-cost averaging isn't about chasing maximum returns. It's a way to minimize risk by spreading out your purchases over time. Sure, dumping a lump sum into the market might score bigger gains if the price continues to rise. But that's a gamble. If prices later tumble, you could get stuck with some nasty losses.
DCA takes the emotions out of investing. You commit to investing a set amount on a regular schedule, regardless of market swings. When prices sink your regular purchases grab more coins. When they rally, your buys nab fewer. Over months and years, it smoothes out your cost basis.
The beauty is that DCA forces discipline. By automating purchases, you stick to the plan through rough patches. And you avoid the pitfall of trying to time perfect entry points (nearly impossible to do consistently).
Of course DCA has limits. Don't expect miracles in a steady down market. And in a raging bull run, total returns may still lag lump-sum bets. But for most goals, DCA's gentle compromise of reasonable returns and risk control is tough to beat.
So sure - anytime is a good time to start DCA plans. Whether markets are hot or not, just set your regimen and let it ride. Over long periods the smoothing effect works wonders. And you'll sleep easier at night.