I would tend to agree that bounty hunting is no longer profitable this year. I guess this is due to the bearish alt market. But there are still a lot of companies who you just describe. They still bounty hunters to promote their site through air drops.
I agree with that, 2018 and 2019 are not really good for bounty hunters. Lets call it an autumn season that poor or no earnings at all but always be patience because harvest season will come to most bounty hunters that keep on doing bounties despite of the current market condition. All hard works will be paid off for sure.