Management's fault:
They tend to be greedy at one point of time and starts thinking that if they distribute the bounty to the hunters they will dump it anyway nad the value of token will crash down and they dealy the distribution meanwhile the bounty hunters start writing bad about the project and there were instances that the genuine bounty projects were termed as scam for this issue.
Bounty hunter's fault:
Bounty hunter just join any random campaign without investigating and then they are the greediest bunch(not everyone) I have seen while managing the campaigns as one user registers with hundreds of fake accounts and that too their account has followers who have nothing to do with crpto as most of them as desperate who just follows the twitter account by looking at fake DP of some hot girls which are often used by the hunters to gain more followers, moreover, the bounty users enter their ETH address on some other person's profile as well and if the bounty manager does not check that then the cheater will get paid twice and the person who works hard will not be paid, submitting false report is one of the main concern wherein the bounty manager has to check thousands of report and some of them just copy-paste old reports to get reward without working.
Then comes those users who keeps spamming the telegram group by sharing some scam projects and irrelevant stuff from numerous fake profiles.
I think the whole bounty process has become a shithole and the worst part is that the signature campaigns are not entertained by bounties as they want to reach wider audience without knowing that most of the social media campaigns do not reach any real audience as it reaches some fake profiles who follow the bounty hunters just by looking at their picture.
Regardless of the issue, the bounty managers are cursed as if they are paying out of their pocket. Users needs to understand that even bounty managers are paid for their job just like bounty hunters and most of the time even they are not paid for their hardwork. Even a slightest negligence from bounty hunters gets them a negative trust thanks to those merit thirsty users who tries to blame it all on bounty hunters to get a merit.
this is just a brief of not even 5% of pain which bounty managers go through.
Most of the bounty hunters are blaming the bounty managers if their stakes are not correct and they didn't even bother in thinking why they only get that stakes. It's not easy to be a bounty manager if their are plenty of hunters that are almost noob (They just randomly do the task without reading the rules and guidelines). This is the common mistakes of the bounty hunters, though not all but most of the new hunters are like these.