I think airdrop is unless right now and if a successful project giving then it will be small money. Honestly a top project never give you token and they don't allow airdrop. Because after receiving the airdrops token, their investors can reduce their project by crush dumping price. Actually airdrop is a way in which a project uses to conduct its promotion activities. Couldn’t believe airdrop and avoid it always.
That's the basic purpose of a project conducting an airdrop event, they want participants to promote their project to a broader audience base and in return, get some tokens for free which is compensation for the tasks they complete in promoting the project. The compensation is not always going to be worth a lot because the projects that conduct airdrops and giveaways are new in the market which is the reason why they are doing all these promotional campaigns, otherwise, if a project is already successful, it doesn't need to give free tokens to anyone.
So, a person who is interested in airdrops and participates in them a lot should make sure that the airdrops they are participating in are from projects that are good and have the potential to get a lot of investors once launched so that the tokens they get from the airdrop is worth something when they go for selling it.