If the project is a scam, it would be really silly of its team to show their true identities. In most cases, they just find some pics online and use them as the images of their Chief Financial Officers or advisors, as was seen in Empire Card who used a picture of French actress Sabine de Poncins, little known outside of France, as the portrait of their proud imaginary CEO Patricia Harrison. There have even been reports of Ryan Gosling working for a project as a designer under a completely different name.
Some scammers are, however, way more intricate. They know its quite easy to reveal a fake pic so they just hire people to pose as their CEOs, CFOs, and so forth. Rumor has it that certain scammers even pay homeless people to pretend theyre leading a disruptive startup to a bright and radiant future. This fraud is much harder to call out, but at least those guys help homeless people in some way, so heres your silver lining.
It is really tricky and difficult to determine the legitimacy of the project on pictures alone. I wonder if the project team could present a video of themselves like it's a normal day on the office or some information/promotional video. If they could explain the project extensively. Or, make live video updates on social media platforms. Though, these are not enough proof, at least it is a start.
Usually a legit project will just do that. in the past there are plenty of developers making an interview of themselves or with their team therefore people could know whether this person is a real thing or not. But, doing that did not mean that we can trust the developer blindly because even there are some developers that despite known by the public and his face is already published still scam people because they are probably criminal. so, always be careful and look after any possiblity regarding a project.