Given the Sussexes sought financial independence in the wake of Megxit, Harry’s claim was “outrageous”, Mr Fitzwilliams argued.
He added: “Since they initially announced they were seeking financial independence and have found it because of their royal status, it is simply outrageous that they presented such a totally false view of the situation on Oprah.
“No doubt it is another version of ‘their truth’. The intricacies of exactly when support ceased will obviously elude almost everybody following this.”
Mr Fitzwilliams wished the Sussexes success in their life outside the royal bubble but questioned why they “do such unnecessary damage to the Royal Family.”