A good bounty program should be a project with much hype so that there will be possibility of reaching softcap in order for bounty hunters to be get paid. It must Aldo be managed by credible bounty manager or bounty host website.
Note that hype can be bought nowadays with just a over 100$ and can create a fake hype and mislead people into investing scams at times as well leaving you unpaid for your work done.
So I don't think hype is a good way to judge whether a bounty program is good or bad.