Waiting is not an investment strategy, especially with bitcoin.
Good luck if you believe that waiting is a good investment strategy, you are likely going to need it, since you may well end up regretting that you had failed/refused to prepare yourself for UP.. and you were too busy preparing for down that did not end up happening as much as you had expected it to happen. It probably sucks to be you, especially since you seem to not to recognize the importance in accumulating BTC.
What you say is very true, if we continue to wait until prices fall before investing, it is very likely that we will miss the opportunity that is in front of us and we will really regret this when other people have taken advantage of what they invested.
Everything depends on your initial strategy because however for the accumulation of bitcoin in the portopolio that we have there are several strategies that can be done including waiting until bitcoin is considered to be at the desired price and actually I think that is not a problem because in the end besides DCA until now there are still some people who always rely on the buy dip strategy where it is still good enough to do.
Although indeed in this case the weakness is that we have to keep waiting and can be left behind when we are wrong in making observations that make us left behind when the bullrun but not a few people do that.
However, buying like this is still worth it so I think when you do something like this it can still be justified but indeed if you want to find a strategy that is more worth it then indeed DCA can be done only in this case your consistency and determination must be strong if you really want to do DCA.