Please tell me this was sarcasm that is going undetected.
You don't think Saban's style raises the competition level for everyone on the team? If you're on the bottom of the depth chart, you're worried that he's going to pull your scholarship, and now you're working even harder. Which means the guy ahead of you needs to work even harder and so on and so on. There's no debating whether or not it works, he just lets you know right up front he's all about winning, it's not personal the kid just wasn't good enough.