Yeah, sure it is possible to be profitable with trading and it is even more likely that positions can be bolstered by attempting to buy more when the BTC price is down; however, it way more likely that normies are going to do way worse in their BTC accumulation (and therefore future profits) if they fuck around with trading... beyond maybe some minor attempts to buy more during dip periods...and erroring on the side of mostly just regular and persistent buying and accumulating of BTC and increasing their wealth (or likely wealth) through such ongoing, regular and persistent accumulating/buying efforts.
As a small bitcoin holder i dare not to trade with BTC if I wish. Because volatility might eat up my little BTC. But for small holders I think holding Bitcoin is more suitable than trading. A trader is not always profitable. But I want to keep myself out of this calculation of profit or loss and try to keep up with DCA. There are many small BTC holders like me who were afraid to dream. Today they dare to dream that is only by holding BTC. A big trader might be able to temporarily invest in Bitcoin and walk away with money but there are many holders like us who choose Bitcoin as their permanent asset. More than gold or any other precious commodity, BTC has come to be considered a permanent asset to our holders. When the price of Bitcoin falls, some people express disappointment, but some holders like us smile because there will be an opportunity to buy Bitcoin at a lower price.