His green jersey wins need to be seen in the context ofthe current rules. In his position under current rules he wold be nuts not to go for the green at the Tour as its set up for him.
I suspect if he wins it again next year we will see a revision of the rules again in favour of pure sprinters who win most stages - the last change almost had a a slight odour of avoiding Cav winning time after time. Changing back to this set up would see lots of competition potentially given Greipel and Kittel current showing and the willingness of teams to go the spri train route.
He is a still a kid who is enjoying himself I would love to see a Brit potential classics rider like him on the scene. He is a fantastic rider who will figure in the monuments even more so when he gets a little older.