I believe if they meet the minimum standard and are elite athletes they should be allowed in. They will have the opportunity to get the tutoring and mentoring they need to learn and catch up if they really want to, and they will also get the opportunity to ball out and go pro if that's what they are solely focused on.
Miami is a top 50 school academically in the country. That doesn't nessecarilly mean that it will be harder for kids who may not have learned much in high school to succeed. What it does mean is that there will be more real academic resources for that kid to utilize at the school. I'm not talking about cheating, but actual advantages like smaller class size, professors who are willing to spend time individually with students and student tutors.
Athletes actually get to utilize these resources more than the average student.
Look, with a guy like Richt at the helm, you can be sure that he is going to do what's best for the student-athlete. From all accounts I've seen he actually does care about the kids and wants them to be successful in whatever field they end up going into.
At the end of the day, I believe Miami is a better environment for academically challenged kids moreso than a place like Alabama. Where they will continue to coast and not really learn anything and where a guy like Saban could care less what happens to you after you graduate.