Yes most of the airdrops now a days are fake, full of scam, time waste for everyone. Even if some airdrops provide few tokens, those tokens price are in pennies when they got listed on exchanges. But if you do good research before joining any airdrop, you can easily save yourselves some time and get involved in some good airdrops at the same time. I start by looking the project website and there team members. If any project is claiming that you'll get $100 worth of tokens, basically set a price on there airdrop tokens, 99% those claims are false. I have been involved in many airdrops who claim that and never get even 10% value of what they claim.