A Airdrop is a good thing, if it was funded by the developer of the coin and not funded by some pre-mine. The pre-mine is just an excuse to give free money to the developer and his/her buddies. I am also not a big fan of the free coins that are awarded to people when there is a fork. , because I am a strong believer that people have to work for their money.

Take Ehtereum for example : There was a pre-mine and most of those coins went to the developers and the founders.