this is true. But there are some real airdrops are here and these airdrops value is considerable . Therefore you have to find good airdrop and do it. Reward value lower than 1$ is useless airdrop .therefore some real airdrops are useless . I invite you if you do airdrop please find it is real and find reward value is considerable . i do airdrop until now.
I won't really say 99% though haha. That is too much. But I agree 100% that most of the airdrops are full of crap and is just used for marketing purposes with the people having no intention of paying off any kind of tokens