I can't trust a project just because a legendary members post their announcements thread, he can be paid to do so and i don't think forum rank really justifies the guenuity and legitness of a person.
You are right. Legendary rank won't guarantee that the project announcement is legit or trustable. Yep, the project team can pay him to make the announcement. Also, the level of ranks in this forum has nothing to do with the quality of a project announcement. Even if someone has been a long time in this forum, it cannot be an indicator/sign that he is a trustable person. We also cannot measure someone's experience or knowledge by analyzing how long he has been in the forum. Keep doing analyzing on everything that has a correlation to the quality of the project such as the identity or track record of the project teams, project's MVP, the token's function/concept, the exchanges where the tokens are listed, and etc.
For those bounty hunters, if the manager of the project is in a Legendary rank; it doesn't mean that the project will become successful easily. They are just managing the campaign so there is no guarantee that the project will become successful. Back then, there are a lot of bounty managers in the forum that have low rank but they managed to become successful. What I am saying is we should base on the company facts and information and we should not just base our trust just because the campaign manager is a Legendary.