I was mad at the time. He seemed like such a coward. But I'm not mad at Durant anymore.
The only thing I'm mad at is the league. The huge salary cap increase was a terrible decision. It totally disrupted a well working system. If they had gradually raised the salary cap this would never have happened. And this scenario with the Warriors will never happen again. I will just call it 'the Mistake'.
Before the summer of 2016 everybody loved the Warriors (myself included). They had drafted extremely well, played a fun style of basketball and had a great crowd. They deserved the success they were having. In a normal environment they would've had a tough decision to make whether to resign Barnes (and probably would have) and they would have continued to be a great (yet beatable) team. Nothing wrong with that.
I'm rooting for players, coaches and organizations who prioritize constructing a winning basketball team in a fair way. The Warriors team is exactly that. All players make sacrifices to achieve greatness. The recuitment and signing of Durant is a part of that. They didn't bend the rules. Without 'the Mistake', the Warriors never would have had the opportunity too sign Durant, but due to 'the Mistake' the Warriors had a unique chance to become the best basketball team in history. I don't think you can blame them for that.
On Durant's part, I'm convinced that he would have parted ways with OKC anyhow. And that's on the management of OKC. They made so many mistakes (most noticably the Harden case) that Durant had all the reasons to have lost faith in the leadership to create a championship team, even though they were close in beating GSW in the playoffs.
I think Durant would have been a Celtic without 'the Mistake'. You can call it a cowardly move to choose GSW, but it made a lot of sense. Every star player wants to win a championship and thats why they want to play with other good players to achieve that. Therefore All Stars like to play with each other, that's completely natural. It always has been like that. But only a few Stars get that possibility, because of all the restrictions the NBA has. Which is just a way of regulating the market.
Of course with a superstar like Curry already present there's some pride and ego to give up to play in his shadow, which not every Star is willing to do, but you could also praise him for that as a sign of character to put the team before him. Wade did the same thing in Miami. In a different way the salary cuts players like Duncan and Nowitzki took can be viewed the same. Other then that Durant is a great fit on that team. The Warriors needed a two-way SF. And the adaption was almost smoothly.
'the Mistake' created the problem. Not Durant. Not the Warriors. In 2-3 years the NBA will have adapted to the new salary climate and most absurd contracts will be gone and every team will have to face the same restictions like they've always been. But the Durant signing can't be undone. I think Thompson and Green will take pay cuts to make the continuation of this Warriors dynasty possible and I think they absolutely should.