Too many airdrops can make too confusing. I usually don't participating airdrop.
Bounty campaign is better than airdrop campaign because if you find a good one, you will get a good payment.
Not everyone same as you, i think you were lucky to participated such airdrops.
actually the problem is the same, because what happens to airdrop or bounty tokens is luck when they are listed on the market.
there are also lots of bounty or airdrop tokens that don't have a market and that will only be trash.