having seen some great bounty managers here on bitcointalk who have done wonderfully well in the past but end up running campaigns that later turn to be Scam make me wonder if they actually do research well on any ICO before taking up the job or are they just concern about their pocket alone?
As far as i know,not all of them are checking the background because if they are checking and investigating first we wont have any scam bounty campaigns here,recently my friend has joined a scam ICO,DENARO which has stolen $10M from the investors they have used fake profiles and names,it was handled by one of the top bounty managers here so it means that these managers arent doing their homework.
Not a lot of them but some do I think. So it really depends on the ICO and it's hard to say for sure.