Really? There are many Airdrops that have paid good amount of money years back and even this 2020, it's about how good you are at analysing projects, it's same answer for bounties too, atleast I've seen bounties that pays Bounty Hunters thousands of dollars this year, it's all about how good you are at choosing these projects mate.
If bounty campaign, we don't doubt it, yes many bounties pay Bounty Hunters thousands of dollars but if equate bounty and airdrop about how good you are at choosing the projects, I think you are wrong, I never see any airdrop pays hunters with a good amount, so I think you don't say that without proof, can you tell me the airdrop you mean??