If the developers decided to abandon the bounty, they are obviously very confident in their abilities. Perhaps they know something that ordinary members of the community do not know. It is possible that the AMANPURI project is so unique that it can become popular without holding a bounty or airdrop.
it is their right and their decision,so they have a strong marketing team and they will be engaged in increasing the popularity of this project
And where does this information come from, that they have a strong marketing company? maybe I just don't understand something