well why not everyone will freakout regarding bitcoin price? the price gained a lot since last week and and it break another all time high this week. long term holders will ignore the price as long as it they have still a profit but for short term holders every hour counts they will freak out if the value loses 200 or 300 in one day.
You are right, only long-term investors can really make money, novice and short-term investors will face a little price fluctuations panic, their emotions is the ups and downs with the Bitcoin price, everyone must learn to manage their own mentality.
The main reason of freaking out is not of self control and following their emotion and doing to panic selling. That's will happen for those holder that can't wait or not having a patience. Much better to have more profit is holding for long term and wait until bitcoin price was bouncing back or if you see that you have already your profit then sell all of it. Lucky for those who can wait and hold in bitcoin and having a huge profit, this is not a first time bitcoin in dip just hold.