All participants of the bounty companies fell for fraudsters, or soon they will fall, I try to first consult with experienced people and only after that I join the company.
There is actually nothing hard in being able to do things yourself when it comes to being able to identify scam but the thing with a whole bunch of people is that the laziness to do research is the main reason why they always try to look for a shortcut or just take some unnecessary risks at the end of the day.
So far so good, I would say the best thing to always do is to on your own be able to take into account, the team as well as the product when it comes to investing into anything or even joining bounty campaigns. As a campaign participant, you frustrate the scammers from even getting any recognition from you, let alone getting that from an investor.