I don't think their bounty thread will pay.
Because there are only 300 people in the whole telegram group, it is very difficult to complete the crowdfunding.
You cannot decide on how many people are added in telegram group because i have seen some ICO which even dont have enough users joined it but still they have not only completed their crowdfunding but even they got more then that and before the dead line. So it is everything on advertising part and how they attract the big investors with their project and ideas.
I totally agree with you that if the project is very good and with little bit good marketing and advertising can bring good investment for the project. It is not that always good bounty thread or bounty offers will make the project success.