Of course you are right. But still there are people who want to get coins for free, even if they are smaller than before. On the other hand, this is a good advertisement for the project and should not miss the chance.
Conducting bounty and airdrop has always been the best way to draw the attention of the crypto community to the project. This is a proven method for years and thousands of projects. It always worked and will work!
Good luck IEX and thanks for the prizes that this project sometimes gives out to your community!
But this has its drawback. As soon as people pick up coins, they immediately sell them. And the course of the coin falls.