See my post aboveI'd be interested to hear how @Banchory Buddha thought that the old SSS (which is what he directed his "flawed" comment towards and hence indirectly towards Course Rating) was flawed.
My own view is that CR's in my neck of the woods seem reasonable and I have no reason to think that any of them are wildly wrong. BB may have specific examples from his region that leads him to conclude there are flaws in the ratings.