Cool idea, I don't understand who say this is scam.
- They don't want any ETH to launch the product.
- They have a product in alpha stage under development
- They stated and demonstrated what the purpose of airdrop race
Who don't want to participate simply go off from this post and avoid writing "scam scam" like monkeys just to raise the activity level, otherwise write your doubts and wait for an answer.
They make you mine to get tokens, and not all miners will get them, only top 1000.
It's worse than ICO, there you are at least sure that you'll get tokens you paid for. Even if they will worth nothing

This distribution model is just a variation of crowdfunding merged with gambling.