Airdrops were so popular among the crypto-community over the years. One of the key features of the airdrops is, it gives every participant a chance to get some free tokens by completing few tasks. Most importantly it is totally free of charge. But nowadays we frequently see a trend where the organizers of some of the airdrops ask to send a small fee prior to sending the tokens. In some cases, they put a condition saying that in order to withdraw tokens or any fund received from the sale of tokens, it is mandatory to take part in their ICOs. I would rather call such events as "Scam-drops" as they not only dilute the meaning of airdrops, but also make people to move away from future events due to lack of trust.
I see that Airdrops don't make much sense to the project or to everyone, as there are a lot of scams right now and almost 99% of the airdrops i am seeing are meaningless. But the form like like, follow, comment, ... is not really effective for the project, i see the paid airdrops recently it's like paying for users who use their services, Uniswap is an example. People should not expect airdrops because it will be difficult to bring laughter like the night airdops of the past.