Most airdrops are just wasting time. Maybe one out of ten you will hit a really good airdrop with high reward enough to offset for your time but man, 1/10 is very unlikely.
Yeah, the reward you will get is not worth the time and effort your going to exert on that airdrop, better to do other things like trading where you can surely get profit. Most of airdrops now will just hype you in the beginning but after a while it will just slowly vanished or stop working so don't waste your tine waiting for that. But if you are really going for airdrops then you should be patience for you'll see lots of airdrops but find the good one.