I think the several experiences in working with different projects has made bounty hunters very experienced. They can determine a good project from the start but some of the investors are just new and do not really determine a promising project from a scam and in the end scammers run away with their money. So bounty hunters who invest in ICOs will never invest if they do not trust the project.
In fact, I believe that everything depends on the person. Undoubtedly, those who have long participated in the bounty campaign and constantly choose projects are well versed in this, and in the future such participants become investors. As for new investors, few will invest their money without studying the project and not assessing the risks.