Bounties and Airdrops are giving really low profit nowadays. Still, there are some worthy campaigns, but it is better to switch to others way of earning crypto - running nodes, for example.
Well, I don't think Bounty and Airdrop will pay as much as 2017, but who knows in the future. you could support a bounty who is really serious about running the concept they made and paying us worth it. Well, we will never know. as long as the bounty is still not that difficult, I might still support a project through that path.