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.
Despite of those dust amounts but still surprisingly there were people who are really that spending up their time and effort on trying out to grind or even tending to abuse it with multiple accounts and trying to make it fold for how many times until they do able to hit up those withdrawal threshold on which we do know that it is really that close to impossible with this kind target but actually if you are really that extremely lucky then you could really be able to possibly be able to hit that threshold but of course only a few could be able to achieve that. Airdrop amounts are really just that too small on which you wont really be bothering yourself or having those kind of heistance on spending it on gambling because it not something that would really be significant amount that you could really be making yourself that regret on the time that you do lose it.