To recall that time- there was that early season game, with Curry injured and the Warriors down a point vs. the Clippers. KD was on fire. Green was bringing the ball in the last seconds. KD called for it, Green ignored him and forced a missed shot and KD was pissed. Green didn’t like Durant’s reaction and cussed him out, calling him a bitch and said the team didn’t need him. He emphasized that KD wasn’t an original Warrior and would never be a real one. That was when Durant decided he was leaving.
(Curry is leader of the Warriors because of his play, and because Green happily concedes leadership to him. Green was not willing to make that same concession to KD, nor pay him the same respect he gave Thompson.)
The season ended as it did, with the torn Achilles. Durant left for Brooklyn. KD just doesn’t live in resentment or drama, and wasn’t willing to keep a beef with Green going. The two repaired their friendship, with KD deciding it was Kerr’s fault, really (this was a stretch of logic, but it was made to allow him to get to a peace and comfort of mind).
The whole thing could have been avoided, but it would have required maturity from Draymond Green, so…