airdrop is very good for the future because up to 5000 participants.
Their are still a lot of room to join the airdrops. I suppose the campaign manager can recognize or detect fraud and multiple joining accounts?
I'm not sure if the campaign manager were recognize the abusers from the airdrop since they are just host the airdrop.
Maybe they can be able to trace it if they will check and search deeply. But for now the most important thing is if this airdrop be able to help the project in increasing their exposures.