Do most new parents that come here actually understand what it's like to play a sport in college AND maintain a GPA that keeps them eligible?
Do not compare your college experience and your learning disabilities to that of your son (unless you played sports in college).
You have gotten some great feedback. Now its time that you sit down with your son for a man to man and discuss the situation and what might be a good option. He can sit down with his guidance counselor (and you) as well.
If he does not want to attend college, you need to talk about alternate career options with him.