Because back then airdrops are rare and the devs, community and projects are serious that it became a trend to the crypto world. And now here are the scammers, fake devs, money-like faces that transcend through these forum threads. Its sad now that it is really difficult to spot and find a legitimate ICO even airdrops/bounties. So the only thing we can do with this epidemia is to research harder and be picky with these emerging coins. Cryptoworld long time ago is very nostalgic but Goodluck to all of us! It is what it is.