I think we can only follow their rules, because they gave up the money also I think we didn't do so much for the impact for the sale, they got investor from event or conferences. For extended bounty program, it's common mate for now because crypto isn't hype like 2017. They need more promotions and bounty hunter is one of many option that can do promotion massively.
They need more exposures and funds to continue the project, if they are exceeding it's because they still not getting the target amount that they needed to raise in order to continue the progress that they've planned to provide. Many bounty hunters have the same concern regarding to shares and the total time period of their works we need to assess every participations in order not to waste or time.
Maybe bounty is not working well now as many investors know that we are a paid in advertising these campaigns, there should be new way to do bounty hunting or technique that can attract new investors. For the mean time that developers don't see ways we need to be careful in joining since we are not the priority of the developers or the team so we must know when to stop or when is enough for our efforts.