It is a big airdrop indeed, but i think it is not a completely an airdrop because not everyone can participate, there is requirement.
I think it can be called early adopters reward, because the airdrop is only eligible for early uniswap user account.
Common airdrop usually have no account requirement, everyone can join.
Actually if the airdrop pay huge amount of token ,then the value of token they are paying will reduced his value.The do when the payment of token was send to the participant.This was the strategy many crypto project doing.But the fact is,the hunters will get something for the work as a monthly payment.Don't aware of this project .