It is interesting that after so much time people are still looking to make profits with airdrops and icos, as you say there was a time in which a decent amount of money could be made with both of them, but those days are never coming back, after all when the majority of those that participated in icos and altcoins got scammed many times over at some point they just get disappointed with the results they got and have no option but to stop as they cannot afford to waste their time and money anymore.
Those who missed past airdrops for the reason that they did not know anything about cryptocurrency at that time are trying to catch up. The main reason for the search for airdrop is that those who are engaged in this do not have the initial capital and are trying to get it in this way.