Why do bounty managers on many projects not answer the questions of the participants? What about you? Have you asked them a question?
Some bounty managers manage multiple campaigns at the same time and they can't handle all the workload. You have to blame bounty manager in that situation because this is his job. If he can't handle all problems then he should not get more campaign that he can handle at the same time. I haven't seen such problem before because I choose my bounty campaigns carefully.