I also don't think that anyone could be this unprofessional, to be honest. Even If he was, the team and the board members agreeing to this make no sense.
I don't see how they are going to pull this off though, with the blockchain and the transparency coming with it, 190m vanishing without anyone knowing anything about it is impossible.
Or at least let the company continue and leave the funds behind for his family and for the company to continue to operate .
Just think about it if you are in the business and you already knew that you are ill you would do something about it and what's the point of taking other peoples money if you are already dead?
Unless someone is using him or he is only faking his own death?