Airdrop hunting is worth it sometimes, but sometimes, it's nothing more than a waste of time, and I say this by experience. I also tried doing airdrop hunting for a few months because a lot of friends had told me that it's profitable and you can get good money from them sometimes, so I tried it, spent time and money on multiple airdrops, but got nothing promising from any of them and that made me realize that I was just wasting my time and money, and even if I manage to get something from one of them later on, it's not worth it after losing so much money and time in the previous ones.
I somehow agree with you that airdrop hunting is mostly about luck, and those who try in each airdrop might manage to get something some time but only someone who has a lot of free time and extra funds can do that unless they only take part in free ones which are even a bigger waste of time.