No they haven't and stop spreading non-sense.

But it puzzles me how many people are thinking airdrop are naturally tied to ICOs, seems like bounty hunting is really damaging long terms.

What China has banned are airdrops that are part of ICOs who are luring people to buy more after they receive a worthless pile of tokens. You can safely create you coin and do airdrops if you don't plan to run an ICO the same time.

But anyhow, it's China, and nobody cares anymore!