It's better that you should forget the airdrop events right now due to the market condition as there are very few projects that became successful in this market condition. It's a complete waste of time because if you are going to compare the amount that you are going to receive in last 2017 when the market is very lively it is like : 2019-2020 (10-50$) / 2017-2018 (10-1000$).
That is the difference and that amount will always depend on what project you are participating in because in every 100 projects right now I can say that only 2-5 projects will become successful in their launch like they can achieve their softcap. So think twice before you want to participate in any airdrop, is it worth your time and effort or not.
What is wrong with airdrop? It is almost a free money and you won't have to do a lot of things. Most Airdrop just need to join their telegram channel, make a one time tweet about their project and or sharing their project on FB. It does not hurt to spend 5 or 10 minutes of your time to earn something even though it is a small amount. Remember Big amount starts with a tiny one. Though, I would stay away if they required KYC.