"Our system is old and we would keep up with the new but we don't really want to lose money because of your so called laws and we have zero care about being consumer friendly."
There isn't anything wrong with it per se, however it's lacking in many ways. To see them look at how libraries such as LESS (http://lesscss.org/) and SASS (http://sass-lang.com/) enhance the CSS experience. That being said it seems as though the purpose of this library is to bridge the gap between JavsScript and CSS that developers face when building moderately large systems (I know I have).
"Our system is old and we would keep up with the new but we don't really want to lose money because of your so called laws and we have zero care about being consumer friendly."