It has nothing to do with importance or the dilation of the anus, it's sometimes just very hard to summarise an opinion so succinctly. I often reconsider my ratings, but very rarely what's been said in the review
I can understand that reviewers love text as they put a lot of time into those words, and that's alright. But if a reviewer thinks that their opinion is so important that it can't be put into numbers, then the anus is too closed.
Perhaps I should start using only whole number ratings. Those are the only ones who are well defined in the rating system anyway. 5 not good, 6 average, 7 good, 8 great, 9 excellent, 10 perfect. Don't need much more than that tbh.