Very odd post. He’s enjoyed a hugely successful career in a golden era for men’s tennis. He fully deserves every penny he’s earned from the game, achieved through talent and sheer hard work.
You point out his “drab” voice - perhaps that has something to do with the trauma he endured when as an 8 year old, he had to hide in his headmasters office as 16 of his school mates were being slaughtered in the school gym.
He, his brother and particularly his mother have contributed massively to junior tennis and never charge for their coaching.