If I send you money to work on project A, and you invest that money on into some other project B while paying lip service to project A then yes, I would say you have a bit of an ethical problem.
Notch's criticism is hypocritical, and invalid on the grounds that he doesn't have enough information to say that the project is a "scam".
Notch's criticism is hypocritical, and invalid on the grounds that he doesn't have enough information to say that the project is a "scam".