While panic selling takes place, the market falls dramatically where most of the sellers are newbies and experienced traders/investors are on the buy wall so it's baseless to sell during such wave when returns on investments are concerned.
Panic sellers will always be here no matter how much we advise that its not the correct decision. The problem with them is that they react to FUD rather than seeing and trying to digest what is going on. The market crashes, price plummeted, however this is a perfect buying opportunity for most of us. The investors loves to buy in this kind of dips. They even buy in bulks and accumulated more bitcoin in their wallet. This is how most investors do and its one of the strategy why we have so may investors that have accumulated so much bitcoin overtime.