If a project offers you to handle a bounty for them with good reward, do you think you will still have time to review it? But still there are few managers that still want to promote legit projects even the reward is only little.
I don't understand "good reward" you mean. What makes you say it's good for a newly created token that doesn't have a market yet? The bounty manager can't conclude that the rewards offered are good going forward.
If the meaning of good reward here is a manager's payments, a bad manager will sacrifice his reputation with a big reward only once. most of them are new managers.