I do not challenge the formula but I do wonder at the application. The formula requires that for it to be consistent the speed of light must be the same always or the Energy to be produced would vary, just as a change in the Mass would produce different results.
REP: To bring alive this discussion I guess you want one more answer. Simple answers are already given in the book. I share my theory not be called a thief. And an ungratefull nation doesnt hesitate in proving it.