One of the resultative way to attract a lot of users to the platform is bounty and airdrop. It is a good opportunity to get a free tokens for participants.
yes, your opinion is correct, but bounty or airdrop participants can use their tokens so that they cannot damage the price that can harm the investors, because many bounty participants will sell their tokens much lower later.
After the start of the listing many bounty hunter prefer not to wait but to sell their tokens to take some money.