Beside these scam airdrops , there are some airdrops which gave me a lot of money, as I can say about the Maverick that was previously launched and give users some profit, and also Arbitrum Airdrop, and recently Optimism gives its users a massive airdrop. So, scammers are everywhere, we should take care along with doing any airdrop.
Sure, not all airdrops are scams. Arbitrum and Optimism are the examples of good airdrops. But you must realize that only a few airdrops can give people good amount of money, while most airdrops just waste people's time and efforts.