I've been here for a while, and i've seen the rise (and hopefully the fall) of those bounty campaigns... I know a lot of people won't agree with what i'm about to say, but i'm going to say it anyways...
Let's start by saying I don't have a grudge against "bounty hunters", I know they're people that try to make some beer money, sometimes even considering their bounty hunter activity to be their main source of income. I've also never joined a bounty campaign, and i probably never will, so i don't have a grudge against one specific scam campaign
HOWEVER, if you break it down, a bounty hunter is a person that spams social media and other resources with promo material for a project that's usually pulled out of thin air (having 0 usability). Due to their "work", innocent people fall victim and buy tokens that are worth close to 0 once they can be traded on some dodgy exchange. The end result is: bitcointalk gets spammed with bounty reports and other spam posts that add nothing at all to our community, bitcointalk's resources get used for nothing, innocent people lose money, the crypto community gets a bad name in social media platforms due to the spamming and the scammy tactics of the token owners.
I'd like to see at least 99% of those tokens gone, i'd like to see most bounty hunters either leaving or switching to become actual crypto community members.
You've got a point in that bounty hunters may help suspiciously fraudulent projects "with 0 usability" get investors. However, not all projects promoted by hunters turned out to be scams or useless. I as a person started out as an investor, though I lost my first BTC to scammy cloud mining site Hash Ocean in 2017. It was after some mixed result of crypto investment that I added bounty to it. At least to cover for some losses in trading while advancing my knowledge of blockchain use cases.
If there's a way Bitcointalk can help vet projects that intend to announce their project (through ANN) and/or promote through promotions in the Bounty section, it will help a lot. This site is an authority in the industry. Probably if there could be a sort of commitment to a BTT smart contract fund, it would discourage useless projects and promote quality ones who know their onions.