Yes airdrop is easy to earn free tokens by just following the rules. Now a day some airdrop are not legit because some are turned into scammers because they stool lot of individual wallets owner's identity because they put the links on the phishing site to allow to copy all the needed information so that they can get all the token stored.
I still wonder why people tend to waste a whole lot of their time on airdrops when they can just practically put a little bit of effort into bounties at least, to be able to earn something tangible in the long run. It is all about being smart, and I really do not see airdrop as being smart. Article campaigns are there if you know how to write and it would not take you more than 3 hours at least to write a very good article. Signature campaigns are there as well and some other campaigns that may end up being worth it. However, everyone sure does have what works for them, I believe.
maybe we can save more time by improving some steps, especially when you join in several airdrops at the same time.
No matter the number of airdrops you want to join at the same time, it still does not change the fact that airdrops in most cases are basically useless as you wont be getting so much from them. When it comes to the greater possibility of holding them in case they tend to do well in the future, this is the reason you want to make sure that in as much as it is an airdrop, you want to be sure you are going with the ones worth holding, instead of loading up your wallet with some number of shitcoins or shit tokens as the case may be.