it's actually their choice to promote whic bounty that they think worth and have a big chance to success. But for what u said i can't understand how to choose which bounty that have good or bad. It just gambling, it can be good at begin and ended with bad situation
There are a number of projects in the past that are good at the start, complete with everything, responsive to everyone's inquiries, active inside and outside this forum, great team, and all but ended as bad as the shitty ones.
I can still remember I was one of those who helped promote nousplatform through signature. I always check the project before I join them. That is my practice as I do not want to end up with nothing after all the efforts are done for several months. The project looked really great. They have a great team, they are joining roadshows, etc but still they ended up along with the failed projects. It is always hard to pick the right ones.