Facts at hand:

The Warriors win 73 games.
The OKC Thunder were up 3-1 on the Warriors.
The lost the next three games to lose the series.
KD joins the Warriors in the offseason.

Name another NBA superstar in their prime that lost a series they were up 3-1 to the team with the most wins in a season and joined them months later.

This is far, far, worse than the decision but of course above-it-all NBA fan wonders where the negative responses come from.