Airdrop does not guarantee that you will earn a lot of money, it's very easy to get airdrop for simple actions, registering on the site and resending, for example. But this project can not be realized either. Bounty is much more interesting and reliable, you need to work a little, but the income will be much more attractive. 2 - 3 hours a day for Bounty not too much time to earn tokens that will cost a lot of money over time.