Yes, waiting for a price drop when buying Bitcoin is not an appropriate strategy for long-term investors. Logically, we should understand that waiting for a price drop is a strategy that is prone to dilemmas. So, rather than worrying and missing out on opportunities, I don't think buying Bitcoin should be fixated on price. Regardless of the current price, it's highly likely that in 10 years, the price will be much higher, and we'll profit. So, why ignore momentum and choose the right price when buying Bitcoin?
There is nothing wrong to wait dips for purchasing bitcoin but experienced investors do it differently than newbies. Newbies wait for lower prices, try to find bottom prices to buy in, while experienced investors can do Dollar Cost Averaging regularly and don't mind about price, or they can wait for price dips of 10%, 20% or 30% and buy without concern about at what prices they make purchases.
They know that price dips are very good for accumulation and if they can hold bitcoin for a long time, profit is very good especially if they buy in dips.
When we talk about DCA, this strategy doesn't care about price at all, as it's closely related to consistent buying for greater regularity. Therefore, this strategy has nothing to do with buying Bitcoin when the price drops, as those who practice DCA will remain consistent even when the price rises. Those who practice DCA prioritize consistent buying and don't want to miss any potential opportunities. Therefore, in my opinion, DCA has nothing to do with waiting for the Bitcoin price to drop before buying.
As for senior Bitcoin investors who wait for the price to drop to make purchases, I think it's perfectly reasonable for them to do so. Their Bitcoin portfolios are already quite substantial and may have already reached their Bitcoin accumulation targets. Therefore, with this in mind, DIP is not a problem for them, as their Bitcoin portfolios are already quite substantial. However, for beginners or investors with small Bitcoin portfolios, I personally strongly discourage waiting for a price drop to buy Bitcoin.