Ironically, it looks like this article has been edited to make seem like SLJ is angry, but he understands the decision:

But, he said, “That s— is not in the movie! And I know why it’s not. Because it wasn’t my movie, and they weren’t trying to make me a star.”

Tone is important, so maybe he was frothing at the mouth when he said it, but I read that as him disliking the decision but understanding it.