I think most of the people and also the ICO believe that bounty is main reason for the dump of the coin. It is true in either way but most of the participants are scammers. They make multiple accounts acquire most of the reward and when the coin is listed on exchange they dump it. Most of the content have only views (PAID) and no public interaction but then also then they are getting huge rewards and aquire the reward of true bounty hunter.
FOR ME THE ICO SHOULD HAVE THESE CONDITION :
1) KYC
2) content should be checked nicely.
3) Facebook and Twitter accounts should be checked if they have real people or not.
These things will reward only the one who should get rewarded. I think fraud will be very less by applying these things.
THOUGHT - Only scammer and fraud people dump their coins but True bounty hunters support the project by HODLING as they know how much it takes to give a good content.
That might be the best arrangement for the ICO organizers, but not for bounty hunters, maybe you have read various reasons from the other members above, especially for KYC. The bounty hunter does not want to sell his personal data to the ICO organizers, because of their privacy. The crypto world is created to maintain the privacy of each user, if there is a KYC system, there is no privacy again. Except for registration on exchanges, which has been running for a long time and many people know this exchange (big exchanges), maybe that is necessary