That's vague. I'm not entitled to a thorough explanation, but I was hoping for a better one.
I have not read the play, seen the play, or seen the movie.
It's similar to asking why I think Malfoy in Harry Potter is portrayed as a bad person. There's nothing subtle about the GGR character. I recommend watching the movie, primarily for the performances.
I've seen the speech. He isn't nice, but he's still right. "Do a good job or be replaced by someone who can."
I guess I need to add the movie to my backlog now.