Not necessarily. Sometimes, a bounty manager creates a new alt to make sure if the project starts exit scamming, it won't spoil their reputation.
If this happens it will be very difficult to choose a manager that can be trusted, there are still mwho can be trusted but only a few.
Its hard to find good project and you can't predit what happen that project in future.
So, before you want to join Bounty, you must check it carefully and don't forget to always check it every time.
Because only check 1 time is not enough to trust that project.
What is the purpose of checking the project continously? Because usually problems arise when ICO is over and bounty hunters have finished their work.