By now you should understand that it is because of quick gains that is why they invest in Bitcoin before the halving so that when there is a new ATH, they will have huge profits. However, it is a bad idea because everyone controls how they make use of their finances. If a short and quick gains is their problem, then they should go for it. One thing I must say is that these set of persons do not understand Bitcoin they only came because of the hype of halving, and rumors about Bitcoin making people millionaires. Am glad they were disappointed because the bull run did not just come immediately after the halving, so am certain that most of them by now would have sold their Bitcoin at losses or few profits since the price started going down.