I think he may be standing back a bit. Afterall his reign on the throne will obviously be a short one like his great-great GF Edward VII. So maybe he wants William to take on a lot more as king-in-training, his reign would be longer. Maybe he isn't too well as a man in his mid-60's. His Mother is wonder-woman as far as energy is concerned, as is his father, maybe he isn't.
I do get fed up with thinking Diana was some sort of saint and he was the devil incarnate. Let's face it, he was drsgging his heels abiut finding a bride. Diana was 'thrown' at his feet because she had the right background and no sexual history. I remember watching her go up the aisle at their wedding and thinking 'what on earth are they thinking about'. She was a young girl, at her own admission not very cerebral, loved clothes, pop music etc. Typical of her age. He on the other hand had a completely different set of friends, pastimes,classical music, holistic medicine and views. It was a disaster and the people who pushed this marriage have a lot to answer for. Except of course they did produce Prince William and Harry [who will be super when he settles down a bit].