Lots of people have secret Twitter accounts, even James Comey did. You're just not supposed to post!
For someone like Durant, it's different, players are closer to being kids, and are already on social media all the time. But for an executive, they should know better. I mean, if he wanted to tweet about his kid's college basketball team, sure. But the other stuff?
I wonder if this could end up with the Sixers taking on more of a Spurs model, where Brown is given more power. Popovich was the GM there for eight years, though that was a long time ago. The job is much harder now which is why Pop promoted Buford in the first place.