I don't think that all the project developers who prepared the airdrop tokens were not like you said, because in 2017-2018 I got a number of airdrop tokens that could be saved in exchange for trading and the results I got were also pretty, although not too large.
maybe you are following airdrop, which is where the project is headed and maybe it's also a scam project because during this bearish market there are a lot of airdrop programs that are very unreasonable for the conditions to follow or with the results obtained.