Yeah, airdrops became harder to work on, I may agree. But I still see them as viable options for people with good analysis skills, a referral base, or a farm of accounts ready to make all of these tasks that are available. The rewards in these cases are worth the effort, otherwise - not so much, in my opinion.
For jobless people airdrops are a good source of income especially for those people who live in poorest jurisdictions where poverty rate is much higher than those developed jurisdictions.
Someone with multiple of accounts could easily gain $300 to $500 by participating in multiple airdrops and that's still a good amount they get for the work they do.
In some countries labors work more than 9 hours per day and they get paid less than $100 per month and when we compare airdrops income against those labors then it's a good amount.
Usually the rules for multi accounts are clearly set for some bounties and airdrops, so misuse of this feature is certainly not a good example either ... even for some bounties, for those who are proven to follow the campaign using multi accounts, it can cause them to be banned from participating in the related campaign ... please pay attention to the use of multi accounts more wisely ... it is true, it can generate greater income, but it also reduces the quality of the airdrop, and if this becomes a trend, then over time the potential of the airdrop itself will collapse. There is nothing more interesting about airdrop, except as a buzzer tool.
It seems that what you said is always done for every bounty participation in BTT or ALT, while I myself do not know the mechanism for controlling the airdrop because they currently use telegrams to be able to join.
It should be that multiple accounts are not allowed to participate in one bounty or airdrop because it reduces the original participants. It is also clearly detrimental to other participants and the organizers themselves, because there are the same participants.
I think, currently, airdrops is very difficult compared to bounty, and it is not efficient to participate, so a lot of time is wasted and does not match the results obtained, because the participants are more than the bounty.