Bounty hunting is different from airdrops, but you can say that both have similarities like you need to promote them on various social media platforms in order to get "PAID" or you need to do certain tasks for you to "RECEIVE" tokens.

Take note that I capitalize the term "paid" and "receive" because I want to say that the reward that you can get by participating in these 2 are most likely not worth especially in bounty hunting. I don't want to say that it's dead already since there are some new projects that are launching their bounty campaign here, but for me and for most here, it isn't worth the time. As for airdrops, nowadays if you want to get a huge number of tokens, you need to invest huge amount of money into their project. That's how airdrops are right now unlike in the past that you'll just need to put your wallet address and you're good to go.

I tried joining airdrops this year, and for me, it isn't worth it unless you have a huge amount of money to invest. Is it worthwhile? Yes, if you have huge amount of money, but aside from that, no it isn't