I see no shame in what I said. You were suggesting that the RF should announce the fact that his father is not his biological father and it might bring him down a peg or two.
And how can it be fraudulent on his part even if he is not Charles' son? He was registered at birth as the son of HRH Prince Charles. Unless and until proved otherwise, that is the end of the matter. Harry clearly had no part in how his birth was registered.
In any event, Charles has always treated him as his son (more likely than not because he actually is his son), so biology aside, he is a member of the Royal Family.