Most of us think that is how it works. With little work/effort, with also small rewards.
Joining airdrops just serves as a part-time job for others, so they don't bother to complain about it.
Well, I remember when faucets were also a task demanding little work and effort in order to be claimed, besides rewards being small. It was possible to make less than 1 dollar daily by spending few hours. Some people had that kind of mindset and end using the faucets' income at casinos in order to increase their earnings, just to make it more worthful. And in case they didn't have positive results, they wouldn't bother at all, since it was just few cents of dollar.
However, those cents of dollar worth right now some dozens of dollar currency. If they had just saved it into a safe wallet, the returns would have been much more consistent and guaranteed by now. Maybe the same is valid for the current workers doing airdrops' tasks in some years from now, although they should immediately convert their earnings to BTC thinking on long term goals. For a young person I think this is the best advice, because the tendency is that he will have time in the future to use the profit he will make from the investments made on the present time.