Yes, but this years Polka Dot jersey wearer just happens to be a GC contestor, thats what makes him so complete, the next ITT could well be another stage win too as its a bit lumpy.
You have to hand it to him whatever your personal opinion.
He is the best climber, the best or almost best TT on this tour, & fit enough to maintain it day after day, still a long way to go, but its a fantastic Tour ride.