It should be noted that I am not saying that buying strategies are not important. However, I am saying that all buying strategies are the same (good) if the funds used to invest in bitcoin are discretionary income.
On the contrary not all buying strategy are good, you spoke of lump sum strategy and DCA accumulating strategy, but you never spoke of dip buying, and I can confidently say that those investors that focus only on dip buying aren't doing it the right way, because by waiting for the dip they are going to miss a whole lot of buying opportunities that may present itself in the market, so it's not a good strategy.
The best way to invest is to use either the DCA accumulating strategy or the lumps sum strategy, then if their is a dip in the market, you may decide to buy aggressively then, only if you have the reserve funds to do so, but waiting for the dip only as a strategy is a terrible way to invest in Bitcoin.
I agree with you because many investors didn't even have this in mind that, what if preventualy the dip doesn't happen or comes what should be the faith of those investors that are yet to buy aggressively all in the name of waiting for the happen,
it is buying and accumulating your Bitcoin investments with DCA strategy, that always gives you the assurance of not losing all you invested on.
There is no strategy that you will use to buy bitcoin and hodli in the long run that will make you run at loss if you have a proper plan on your long term bitcoin accumulation journey, use the right amount from your discretionary income to buy and hodli. provided that you have set up all your backup funds as you started your bitcoin invest. Have a good UTXO management and store majority of your long term holding in a cold storage.
The only thing is that using DCA method enable you to keep your bitcoin accumulation ongoing, consistently and persistently till you reach your bitcoin target in future. I know that bitcoin investment is not 100% guaranteed, but the probability of bitcoin price moving uptrend is higher than downtrend because bitcoin is still in her early stage.
It's is when you are trading, using an amount that is more than your discretionary income or don't build up an emergency funds as you are investing, or you use an exchange as your long term wallet and some risky actions that you are bound to losses.