Its normal especially to newbies in bitcoin and trading to panic when the price is going down. They tend to do that because they lack experience and enough knowledge about the nature of bitcoins and trading. But the longer they are in the business and their experience becomes wider then they will no longer panic and just do proper trading leaving strong emotion aside that impedes their judgment.
Well if you see most of the people who have invested are newbies itself. There are very less people who actually take the effort to
know more about the currency and how it works. Basically people see that bitcoin was 0.1$ some 7 years ago and now it is 900$ so
they invest in it. And when it reaches 1000$ and starts falling a bit they start selling.