Most of the time right bounty campaigns don't allow newbie to participate but this is not always the case. First of all only those project pays bounty rewards who meet their hard and soft caps. If the project is genuine but it fails to achieve required funds then they won't pay bounty reward. Anyhow any project that becomes successful payout bounty reward. Since the recession in the market new investment is not entering in the market so that's why bounty campaigns are struggling to pay their participants.