You are going to put someone's linkedin profile who isn't part of the ICO team in order to make it feel something professional? I don't understand?
Smells fishy, odds and suspicious. Obviously, you got it right! He just wanted to use a linkedin profile to be shown on the list of their teams. It is fooling other people and we would not tolerate a kind of that action here because we don't want scam projects. So be careful on dealing with this person guys.