Now many projects prefer to use airdrop because in airdrop it is necessary to pay users in tokens of the project.
To attract a lot of users it is necessary that people would trust the project. Only is users will trust the project and its product they will participate in airdrop.
Now QUASA is listing on Uniswap. Thanks Uniswap now is possible to sell all the tokens. I think that soon we will see new listings. But is airdrop participants do not want to wait they can sell tokens on Uniswap.