I agree the prince would not have made an ideal ruler but surely it is now common knowledge that most of these rumours have been proven to be either complete falsehoods or not based on any existing information. The David Dickinson book is a fictitious NOVEL only and it is extraordinary that the Jack the Ripper murders are still even mentioned as being connected with the Royal Family.
Oh, I know; it's highly unlikely, and probably attributable to the ongoing fascination with the Ripper.
But it's undeniable that he (known as Old Collar and Cuffs because of his extremely long neck and arms) was what might be called a dodgy character; his tutors and commanding officers despaired of teaching him anything.
And it's long been thought that his death was greeted with a sigh of relief by the RF.
Only Alexandra seems to have sincerely mourned him (but George was always her favorite child).