I would say that bounty campaigns can indeed grow the crypto community, although there are many who doubt it.
We need to know that with a bounty campaign, it will be easier for people to recognize the crypto projects we are promoting. In this way, of course, ordinary people or new investors will join the project, but of course it is not easy and there is no 100% guarantee that it will succeed.
However, with this bounty campaign, from my experience, the average crypto community from the projects I participate in is mostly growing and getting more and more followers.
With the promotional activity that a bounty campaign aims, i can say that its one effective way of growing your crypto community through the contributions made by potential participants. But to rely it all alone from bounty campaigns, i don't think it will work all the time. The promotion should start on the content or substance on the project itself and if those potential investors will embrace the fact that the project's goals will meet the demand of the consumers, then the project itself will totally be a hit. Having a bounty campaign is just a second option.