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.
The thing that is always observed in the case of newbies buying Bitcoin is that they act hesitantly. They cannot understand the right time to buy Bitcoin. Of course, I agree with you that when the Bitcoin market is falling, they buy more and hold it for a long time. Experienced people take advantage of this falling opportunity, and they invest more than their Bitcoin buying budget during the fall. On the other hand, newbies are immersed in a panic around the Bitcoin fall and as a result, their Bitcoin investment is disrupted.
To invest in Bitcoin, you have to accept that it is emerging and there will be price fluctuations. However, if you are aware of all these things and can make regular investments, then it can become a turning point in your future. And to control this, you can use the (dollar cost averaging) i.e. DCA strategy.