His time dominating the field like he has previously, is definitely done I agree.
He is however still one of the best on the planet if fit.
He has achieved alot by being the only person who can push the front of a motorcycle that hard and stay on board.
I think it is now probably harder to catch the front with the evolution of tyres, and more importantly the added down force wings have provided.
He is no longer strong enough with that shoulder either.
I still hope to see him back at the front on occasion after the surgery but don't expect to see him ever dominate again as he once did.
It was great to watch
and I hope to see a bit more wtf in future, but yes the body is not going to let him do it like he has previously.
I do not want to see him physically destroyed and would hope he moderates himself a bit.