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.
I don't think it depends on whether you are an investor or a bounty hunter, instead, it is more about the will you have to learn, I think both types are being exposed to a lot of content referred to cryptocurrencies in general and they both have the same opportunities of learning and understand it.