If people are investing in an ICO entirely because of the presence of a single developer, this introduces a perilous, single-point of failure.  On the plus side, the mandatory investor due-diligence becomes much, much easier -- you simply dig up that person's history on past projects.  This is not the same as relying on 3rd-party opinions expressed in the various forums. 

Your money is at stake.  Do your own research. All the needed information is archived online.