Forum ranks is not the most importand thing to look at when choosing project to participate in, not all high ranked members are reliable either. Basically it's ok to not full trusted some new manager but it also not mean you can just trust higher member though. Sometimes there also new account that created to become an represantive of the project. Its always our due diligence as bounty hunters to choose what campaigns we like to be part of. The best thing you can do to this matter is to have enough time checking all documents of the project had, from whitepaper to a roadmap, and then the last part is the team behind the project.