I think it's high time projects know that they cannot rely solely on bounty and airdrop as a means of promotion. A lot of projects launch and they rely on their bounty campaigns and airdrop to help bring in investors and therefore fail to reach their softcap.
I never said bounties are not effective but it should only be used to create and reward their community not to bring in investors. If a project wants to promote it crowdsale then the team should deploy real promotional means like paying top influencers, attending conferences, advertisements on top sites like coinmarketcap, etc. Because no matter how good the project is, if it can't market properly then it won't reach its goals and if a project is mediocre but have a top notch marketing program, it will succeed beyond expectations.
Bounty alone is never going to be enough bounty hunters are just sending the messages and the offers across potential investors, if they see the platform and the project and they think it's worth their money, they readily invest on it, but if they think it's a bad one they will just shun or ignore it.