so you are expecting them to give you $1000 by doing nothing ?
wake up buddy,there's no free lunch in this world.
if you want to get something(like those for example) then do something for them,like find the bug ? advertising ? and many more.
airdrop was not created solely to give you and other people money for free,but instead it's created to raise other people awareness about something(like this project).
even though it's only a single dollar.but because it,people know and understand about this project and what is going on with it.