Other teams are aware of what Kanter said. They're not going to call the Jazz as if they don't know. If a team wants to take a shot on Kanter they're going to accept his baggage and not take into consideration the bad blood between him and the Jazz.
They know what Kanter said, but they don't know what went on behind the scenes. And if you don't think many GMs are going to call DL and ask him about that, I think you're very mistaken.