2. They can change certain rules that aren't reasonable, just because it's their project and they are handling the distribution they are free to do some bad things
As far as I know, even if the project was handled by a popular manager, they can still change the rules anytime they want by the order of the project team/developer. It doesn't have any difference because bounty managers are just being paid to follow the instructions of how the team wants to run the bounty campaign.