A bounty Hunter is not an investor. He becomes an investor if he buys the token/coin. Most hunters will dump their token when they get paid and move over to another project. A bounty Hunter is a promoter, that is shilling a project to his own circle of influence.
There is difference between a bounty hunter and an investor. An investor earns money by investing his own money. A bounty hunter earns money by working for free. If a bounty hunter gets a token, he can sell it at any time because that token. T he did not buy with his own money, he can sell it at a profit for him. And an investor. Before selling any token he will sell it after much thought. Because he has invested his own money in the tokens.
A bounty Hunter isn't really working for free. He is working with the hope of getting paid, that's what is driving him. The investor on the other is investing because he want to make money, so he invest his money.