The first is because the relationship between Wei Shao and George is unusual. Compared to Durant, Wei Shao still likes George more. The second is because the team Durant joined is a mortal enemy of Wei Shao's team, so Wei Shao particularly hates Durant. But judging from the current situation, there is still a high probability that the two of them can reconcile.
First of all, it is naturally because Wei Shao has different feelings for the two people. Just like us ordinary people, when we interact with others, our friendships naturally have depth and depth. If different people perform the same behavior, our inner feelings will be different. This is the so-called "treating people but not things" and protecting shortcomings. The same goes for Wei Shao. Because George and Wei Shao have been teammates who have been through thick and thin together for many years, Wei Shao has walked many difficult roads together and enjoyed glory together, so the friendship is naturally very deep. But Durant is different. Durant and Wei Shao have only been colleagues for two years. Although their relationship is good, it is not as good as George. So it's normal for Wei Shao to treat them differently.
Another reason is because the ways George and Durant left the team were inconsistent. George was traded away by the Thunder, while Durant left on his own initiative. Moreover, the team he went to was a team that had a grievance with his previous team. The Thunder almost made it to the Finals back then, but were defeated by the Warriors and fell short. But Durant joined the opponent during the truce period. How could Mr. Wei not be angry about this?
So it is normal to say that Wei Shao has very different attitudes towards the two people. Is it possible for us ordinary people to welcome a "capital to the enemy" or a traitor with a smile? However, the relationship between the two seems to have gotten much better recently in the Star Game, so it doesn't necessarily seem like the two have reconciled.