both are still a consideration for everyone who enjoys it. some people do both some prefer bounties over airdrops.
what is clear, I myself only believe in airdrops carried out by projects that are already running or new projects that collaborate with pre-existing projects.
That depends on the individual. For some people, bounties may be more suitable, and for some other group airdrops may be suitable. Nowadays airdrops are also taking a lot of time to enroll. Previously all you need to do was to provide your ERC-20 wallet address, and may be the email address as well. But now the airdrops ask for all sort of information, including the Twitter, Facebook and Telegram accounts. Also, you need to make posts with your social media accounts. In short even the airdrops have become similar to bounty campaigns.