Advertising plays an important role, especially at the first stages of project development. After all, it is so important to pay attention to the project. I also saw NEOXCARD banners on the Bitcointalk.
Now it is difficult to develop a project without advertising. Now there are a huge number of marketing services that are engaged in the promotion of cryptocurrency projects.
If a lot of people participate in the bounty and advertise the signatures of the project, it means that the project is interesting to people and they have paid attention to it.