No, this is only 2018 current condition. If I compare with last year (2017) there are many legit airdrops. Like BLUE, ELTCOIN, EREAL, BITWHITE, REBL, and many more. So, I can say 2018 is the worst time for airdrop. I think the last Airdrop which gives good token was POLYMATH.
I do not think POLYMATH is the best token I get. Hydrogen's Hydrogen is the best token I have ever received. Today, I owned 222,222 Hydrogen Tokens and the amount I received was $ 1k