They have time to experience by themselves with bounties and later they will realize that most of bounties don't worth their time. They can receive tokens if project teams are good and distribute tokens as promised or they can not get anything if projrct teams go scam and refuse to distribute tokens at the end. Even if receiving tokens, value of tokens can be nearly nothing.
They can do research to avoid scam projects if they don't want to advertise for scammers but no perfect results from their researches. It is hard for newbies to know what are good what are scam projects.
I think following a new project managed by a trusted project team like Hhampuz, Roysee, Yahoo will be a pretty good project, but regarding the payment it depends on how the project will pay. Trustworthy project managers have done enough detailed research for them to manage. Bounty hunters only need to follow the rules that have been made and see how much payment they will receive from the tasks they work on. Whether it's worth it or not depends on how the job is done. Now more followers on the signature campaign, but it won't be easy.