The thing is, no one can predict the future. That's why there's the saying "the best time to buy Bitcoin is now." The guy bought 18,600 BTC and then the price dropped 35%. It could have just as easily gone the other way. Endlessly postponing buying BTC in the hope that "the price gets lower," you may end up never buying at all.

In 2-3 years' time, the guy who bought 18,600 BTC could be sitting at a few billion dollars' worth of BTC. It could be the smartest investment he's ever made, even if he's "currently losing"...