f the information is online, it can be checked. There have already been many cases when fraud ICOs were exposed in this way.
If the team is presented for the first time, the project is new, then all you can check is what they provided. It does not give much confidence. Therefore, many projects attract famous personalities to the team. I think this often distorts the true image of a projects potential.
If a new and unknown team attracts a famous person in the field of cryptocurrency, I do not think that this person will ruin his reputation by working with a fraudulent project.