there is nothing wrong in airdrop because we can get profit by following it. even though it's actually a disadvantage for us if it's a scam but it doesn't really matter. because the time we use is not much in working on it
you are right. airdrop is sometimes used to advertise a project, and there's nothing wrong with that. other than that, airdrop helped quite a few people who worked on it. but, for this year, I think Airdrop has also become a little difficult to find.