I will prefer DCA to lump sum. I only encourage lump sum when the market is really down and that is during bear market. But during bull market I do not advise it at all.
doing a lump sum during a bull run while waiting for the “right time” might not be advisable because you might miss out on the high prices and might experience fomo and might lead you to poor timed decisions
I also prefer to advice people not to DCA blindly but that they can wait until a price is reached before they DCA instead of doing it weekly.
dca should be planned properly so it shouldn’t be just done blindly to ensure a regular and consistent accumulation of bitcoin otherwise you might just go off based on your current mood which might not always be the most reliable