Forget advisers, what if after sales they don't act on the advise of the advisory boards? John McAfee once supported an ICO and the price fell like tsunami when it got to the exchange and I loss big. I will not be deceived by any paid professional hired as an adviser. Good team will always deliver when handling a good project even without advisory board.
Some advisers are too often involved in various projects that have yielded little success to investors and, therefore, they have earned a reputation of people who may be involved in any projects including fraudulent. John McAfee is among them.