Those who panic and sold there bitcoin early properly lack the understanding of bitcoin and it's characteristics, some sell when the price low thinking it may go more dip some also sell when the price is high to make little profit and hoping to buy back when the price drop i still classified these two as traders/gamblers because they lack the patient to accumulate and hodl bitcoin for long.
Fear is the end of any investment.
Proper and appropriate knowledge gets rid of fear and uncertainty, especially if we are talking about BTC..