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.
Actually bounty hunting still pays off but don't expect to get the same amount as we are getting back in the days where bounty hunting will give you a lot of fortune. But if you're doing this as a part-time job you don't need to worry about getting a low reward from this.