He has a right to discuss his life.
Well yeah, clearly he does.
After all we've had several interviews, assorted spiteful jabs, a book, a 'documentary', threats of more of the same...
So I think Harry has fully availed of his 'right' to discuss his life, and that of others who didn't ask for their privacy to be invaded. I can't think of anyone else who insists we need to hear about his 'side' as much as Harry.
However, so long as he makes everything about him and refuses to see how his actions relate to other people, then it's best he remains as an extra in his wife's twerking videos. His 'support' is not needed.