That's the airdrop or bounty Hunter.90% of them will dump, only 10% will believe and hold.Why are they doing dumps? Because they believe that every time the airdrop event is over there will be a decrease in price and they don't want to miss selling these coins.
but for sure if the project look solid and promissing project, for sure about 50% of bounty hunters will not sell their rewards as soon as possible
thats why before we join any campaign we should do our research, just like if we want to invest our money