I'm still actively participating in the airdrop. I get 1k bucks recently just from staking retroactive (XPL). I get even 5x ROI from participating in the pre-sale by ZKC for its prover participants.
But that doesn't sound like an airdrop, based on your description it seems like you made
an investment (or rather made a bet) and made a profit on your capital not on free coins that you got for free without doing anything or risking anything which is the definition of an airdrop.
In that case you could have made similar 5x returns on a lot of other altcoins that get pumped like that from time to time.