The MCAT already tests memorization. If you take a class with TPR and/or Kaplan, the amount of material covered is quite a bit. And why do you think Ochem and biochemistry are required/recommeded course list. Those are the two of the more memorization intensive science courses out there, that not only rely on rote memorization, but application as well.
For example, in one of my gen. ed courses this semester, we had to memorize the the places of ~35 countries, mind you that I was never really good at geography, it took me about three repetitions, and ten mintues, to correctly place 30+ countries (my first try was like <5 right.) So rote memorization is relatively easy.
Ochem on the other hand, is slightly more difficult, you remember all the reactions you want, but if the teacher throws at you a weird problem, that you can't figure out, you'll never get it right, regardless if you knew all the reactions. Case in point, there were some kids in my ochem class who knew the reactions like the back of their hand, but when it came to synthesis problems, they couldn't do it. I on the other hand knew most of
the reactions, but I could the synthesis problems, I might have missed some smaller points here and there for not knowing the reactions perfectly, but over all I did better.
So, the bottom line is that I think since med school looks at these classes and the MCAT, that med schools, are not only looking for someone who can memorize everything but apply it as well.
Think about it, doctors do it all the time, they have this wealth of knowledge, but they have to know how to use it if they want to treat a patient.