As long as new projects and coins enter the cryptocurrency world, as well as this forum exists, Bounty programs will run. These new projects and old projects which wish to refine their strategies need the help of bounty hunters to spread the awareness across all over the globe.
I think bounty program is here to stay. This is needed to advertise the projects. Bounty hunters are also the future investors especially when they see a good projects. They also advertise the campaign.