Without him completing core, it might be a different story.
Green has its own value and every single player who played from this franchise knew how he works hard to boost each teammate he's playing alongside. Splash bro won't get that privilege to perform well without Green helping them to rotate the ball. He and Iggy are the ones who give the splash bro an easy task.
Just keep throwing that ball and we will take care of the rest. That confidence that was developed with the splash bro brings them all the titles that they.
collected for the past years of dominating this league.
They build the chemistry already, before Durant joined the GSW, they are already winning and have won 2 championships IIRC. Curry, Thompson, and Green are a big part of the team's success, there were times where Curry struggle but Green produced a triple-double together with Thompson's consistent 3 point shooting, so they still win the game.